Explain this to me

This table contains stats for heroes' picks and bans.
Rank is used to sort heroes by winrate, taking number of their picks and bans into account. Higher rank means the hero is stronger. Rev-Rank (Reverse Rank) is used to show the least effective heroes with the most number of matches.
Number of bans is calculated approximately based on ratio of matches on the position to all matches of the hero.
Balance metric estimates how balanced the meta is (0 to 100)

Median hero picks (mp): 5 - Median hero bans (mb): 10 - Matches: 80

Remove low picks (0.9mp) Remove low bans (0.9mb)

Balance rank	Winrate	Pickrate	Contest Rate
44.7	69.6	20.1	19.1

Hero	Position	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Templar Assassin	Core Midlane	29	36.25%	100.00	44.94	11	81.82%	2.2	18	61.90%	1.8
Lion	Support Offlane	45	56.25%	99.37	68.35	29	68.97%	5.8	16	52.38%	1.6
Broodmother	Core Offlane	52	65.00%	98.73	79.75	10	50.00%	2.0	42	64.29%	4.2
Mirana	Support Offlane	33	41.25%	98.10	60.76	21	66.67%	4.2	12	61.54%	1.2
Phantom Lancer	Core Safelane	39	48.75%	97.47	67.72	4	75.00%	0.8	35	60.00%	3.5
Nyx Assassin	Support Offlane	57	71.25%	96.84	87.34	28	53.57%	5.6	29	61.29%	2.9
Dark Seer	Core Offlane	29	36.25%	96.20	58.23	19	68.42%	3.8	10	50.00%	1.0
Ember Spirit	Core Midlane	46	57.50%	95.57	82.28	20	50.00%	4.0	26	66.67%	2.6
Slark	Core Safelane	18	22.50%	94.94	36.08	3	66.67%	0.6	15	73.33%	1.5
Morphling	Core Midlane	13	16.25%	94.30	25.32	6	83.33%	1.2	7	58.82%	0.7
Ursa	Core Safelane	48	60.00%	93.67	90.51	14	57.14%	2.8	34	50.00%	3.4
Faceless Void	Core Safelane	38	47.50%	93.04	81.01	10	60.00%	2.0	28	51.61%	2.8
Bristleback	Core Safelane	21	26.25%	92.41	53.16	5	80.00%	1.0	16	54.84%	1.6
Ancient Apparition	Support Safelane	38	47.50%	91.77	82.91	26	57.69%	5.2	12	37.50%	1.2
Phantom Assassin	Core Safelane	11	13.75%	91.14	20.89	5	80.00%	1.0	6	66.67%	0.6
Tidehunter	Core Offlane	35	43.75%	90.51	80.38	10	70.00%	2.0	25	42.86%	2.5
Invoker	Core Midlane	26	32.50%	89.87	69.62	10	80.00%	2.0	16	31.25%	1.6
Juggernaut	Core Safelane	38	47.50%	89.24	85.44	16	56.25%	3.2	22	45.45%	2.2
Phoenix	Support Offlane	17	21.25%	88.61	49.37	7	71.43%	1.4	10	52.63%	1.0
Phoenix	Support Safelane	17	21.25%	87.97	48.73	7	71.43%	1.4	10	52.63%	1.0
Ancient Apparition	Support Offlane	12	15.00%	87.34	38.61	8	75.00%	1.6	4	37.50%	0.4
Chaos Knight	Core Offlane	15	18.75%	86.71	43.67	5	80.00%	1.0	10	50.00%	1.0
Centaur Warrunner	Core Offlane	33	41.25%	86.08	83.54	13	53.85%	2.6	20	47.62%	2.0
Lion	Support Safelane	14	17.50%	85.44	46.20	9	66.67%	1.8	5	52.38%	0.5
Wraith King	Core Safelane	47	58.75%	84.81	96.20	21	52.38%	4.2	26	34.62%	2.6
Meepo	Core Midlane	9	11.25%	84.18	19.62	3	66.67%	0.6	6	83.33%	0.6
Dragon Knight	Core Offlane	17	21.25%	83.54	56.33	8	62.50%	1.6	9	53.33%	0.9
Lifestealer	Core Safelane	25	31.25%	82.91	72.78	5	60.00%	1.0	20	50.00%	2.0
Lycan	Core Offlane	10	12.50%	82.28	20.25	2	50.00%	0.4	8	83.33%	0.8
Tusk	Support Offlane	19	23.75%	81.65	68.99	14	50.00%	2.8	5	83.33%	0.5
Kunkka	Core Midlane	23	28.75%	81.01	74.05	12	58.33%	2.4	11	41.67%	1.1
Batrider	Core Midlane	25	31.25%	80.38	71.52	1	0.00%	0.2	24	58.33%	2.4
Tiny	Core Midlane	30	37.50%	79.75	86.08	17	41.18%	3.4	13	68.42%	1.3
Doom	Core Offlane	24	30.00%	79.11	77.22	9	44.44%	1.8	15	60.00%	1.5
Sand King	Core Offlane	13	16.25%	78.48	44.30	5	80.00%	1.0	8	41.18%	0.8
Clockwerk	Support Offlane	29	36.25%	77.85	89.87	21	57.14%	4.2	8	0.00%	0.8
Riki	Core Safelane	5	6.25%	77.22	12.03	3	100.00%	0.6	2	37.50%	0.2
Storm Spirit	Core Midlane	30	37.50%	76.58	87.97	8	62.50%	1.6	22	36.36%	2.2
Warlock	Support Safelane	7	8.75%	75.95	22.15	6	66.67%	1.2	1	100.00%	0.1
Medusa	Core Safelane	29	36.25%	75.32	91.14	4	50.00%	0.8	25	44.00%	2.5
Tiny	Core Safelane	4	5.00%	74.68	7.59	2	100.00%	0.4	2	68.42%	0.2
Timbersaw	Core Offlane	50	62.50%	74.05	99.37	6	33.33%	1.2	44	38.64%	4.4
Mars	Core Offlane	40	50.00%	73.42	98.10	13	46.15%	2.6	27	32.26%	2.7
Enchantress	Support Offlane	20	25.00%	72.78	76.58	6	50.00%	1.2	14	47.37%	1.4
Puck	Core Midlane	59	73.75%	72.15	100.00	19	36.84%	3.8	40	30.95%	4.0
Dragon Knight	Core Midlane	11	13.75%	71.52	48.10	5	60.00%	1.0	6	53.33%	0.6
Legion Commander	Core Offlane	28	35.00%	70.89	93.67	10	30.00%	2.0	18	50.00%	1.8
Grimstroke	Support Safelane	19	23.75%	70.25	84.81	12	41.67%	2.4	7	50.00%	0.7
Magnus	Core Offlane	13	16.25%	69.62	61.39	5	60.00%	1.0	8	40.00%	0.8
Magnus	Core Midlane	5	6.25%	68.99	15.19	2	100.00%	0.4	3	40.00%	0.3
Spectre	Core Safelane	8	10.00%	68.35	43.04	6	66.67%	1.2	2	0.00%	0.2
Crystal Maiden	Support Safelane	2	2.50%	67.72	1.27	2	100.00%	0.4	0	0.00%	0.0
Undying	Support Offlane	2	2.50%	67.09	3.80	2	100.00%	0.4	0	0.00%	0.0
Snapfire	Support Offlane	20	25.00%	66.46	93.04	12	41.67%	2.4	8	33.33%	0.8
Void Spirit	Core Midlane	17	21.25%	65.82	86.71	9	44.44%	1.8	8	30.00%	0.8
Luna	Core Safelane	6	7.50%	65.19	27.85	4	75.00%	0.8	2	0.00%	0.2
Earth Spirit	Support Offlane	9	11.25%	64.56	55.06	6	50.00%	1.2	3	50.00%	0.3
Oracle	Support Safelane	10	12.50%	63.92	63.92	7	42.86%	1.4	3	66.67%	0.3
Hoodwink	Support Offlane	5	6.25%	63.29	25.95	5	60.00%	1.0	0	0.00%	0.0
Troll Warlord	Core Safelane	15	18.75%	62.66	77.85	4	25.00%	0.8	11	54.55%	1.1
Bristleback	Core Midlane	12	15.00%	62.03	65.19	3	33.33%	0.6	9	54.84%	0.9
Elder Titan	Support Safelane	7	8.75%	61.39	34.81	2	50.00%	0.4	5	64.29%	0.5
Enigma	Core Offlane	2	2.50%	60.76	1.90	1	100.00%	0.2	1	100.00%	0.1
Grimstroke	Support Offlane	24	30.00%	60.13	97.47	15	26.67%	3.0	9	50.00%	0.9
Razor	Core Safelane	10	12.50%	59.49	63.29	5	40.00%	1.0	5	57.14%	0.5
Bristleback	Core Offlane	8	10.00%	58.86	41.77	2	50.00%	0.4	6	54.84%	0.6
Monkey King	Core Safelane	13	16.25%	58.23	74.68	4	25.00%	0.8	9	55.56%	0.9
Anti-Mage	Core Safelane	15	18.75%	57.59	84.18	6	33.33%	1.2	9	44.44%	0.9
Viper	Core Midlane	11	13.75%	56.96	57.59	1	0.00%	0.2	10	55.00%	1.0
Viper	Core Offlane	11	13.75%	56.33	56.96	1	0.00%	0.2	10	55.00%	1.0
Faceless Void	Core Offlane	4	5.00%	55.70	13.92	1	100.00%	0.2	3	51.61%	0.3
Sven	Core Safelane	12	15.00%	55.06	79.11	6	33.33%	1.2	6	50.00%	0.6
Underlord	Core Offlane	5	6.25%	54.43	24.68	2	50.00%	0.4	3	66.67%	0.3
Ember Spirit	Core Safelane	2	2.50%	53.80	6.96	1	100.00%	0.2	1	66.67%	0.1
Tidehunter	Core Safelane	4	5.00%	53.16	15.82	1	100.00%	0.2	3	42.86%	0.3
Morphling	Core Safelane	18	22.50%	52.53	95.57	8	12.50%	1.6	10	58.82%	1.0
Pangolier	Core Offlane	4	5.00%	51.90	22.78	3	66.67%	0.6	1	0.00%	0.1
Venomancer	Core Offlane	5	6.25%	51.27	27.22	2	50.00%	0.4	3	60.00%	0.3
Chaos Knight	Core Safelane	6	7.50%	50.63	40.51	2	50.00%	0.4	4	50.00%	0.4
Snapfire	Support Safelane	20	25.00%	50.00	98.73	12	25.00%	2.4	8	33.33%	0.8
Death Prophet	Support Safelane	4	5.00%	49.37	17.09	1	100.00%	0.2	3	36.36%	0.3
Lycan	Core Safelane	5	6.25%	48.73	23.42	1	0.00%	0.2	4	83.33%	0.4
Slardar	Core Offlane	8	10.00%	48.10	53.80	1	0.00%	0.2	7	57.14%	0.7
Queen of Pain	Core Midlane	2	2.50%	47.47	8.23	1	100.00%	0.2	1	50.00%	0.1
Nature's Prophet	Core Offlane	5	6.25%	46.84	36.71	3	66.67%	0.6	2	0.00%	0.2
Lina	Support Offlane	8	10.00%	46.20	70.89	6	33.33%	1.2	2	66.67%	0.2
Beastmaster	Core Offlane	7	8.75%	45.57	50.63	2	0.00%	0.4	5	80.00%	0.5
Tiny	Support Safelane	4	5.00%	44.94	21.52	2	50.00%	0.4	2	68.42%	0.2
Death Prophet	Core Midlane	11	13.75%	44.30	78.48	3	33.33%	0.6	8	36.36%	0.8
Kunkka	Core Offlane	2	2.50%	43.67	8.86	1	100.00%	0.2	1	41.67%	0.1
Omniknight	Core Offlane	6	7.50%	43.04	46.84	3	33.33%	0.6	3	66.67%	0.3
Windranger	Core Midlane	6	7.50%	42.41	47.47	3	33.33%	0.6	3	66.67%	0.3
Nyx Assassin	Support Safelane	4	5.00%	41.77	24.05	2	50.00%	0.4	2	61.29%	0.2
Puck	Core Offlane	3	3.75%	41.14	14.56	1	100.00%	0.2	2	30.95%	0.2
Shadow Fiend	Core Midlane	3	3.75%	40.51	16.46	2	50.00%	0.4	1	100.00%	0.1
Snapfire	Core Midlane	2	2.50%	39.87	10.13	1	100.00%	0.2	1	33.33%	0.1
Snapfire	Core Offlane	2	2.50%	39.24	9.49	1	100.00%	0.2	1	33.33%	0.1
Rubick	Support Offlane	5	6.25%	38.61	45.57	4	50.00%	0.8	1	0.00%	0.1
Elder Titan	Support Offlane	10	12.50%	37.97	75.95	3	0.00%	0.6	7	64.29%	0.7
Luna	Core Offlane	1	1.25%	37.34	5.70	1	100.00%	0.2	0	0.00%	0.0
Warlock	Support Offlane	1	1.25%	36.71	6.33	1	100.00%	0.2	0	100.00%	0.0
Undying	Support Safelane	1	1.25%	36.08	5.06	1	100.00%	0.2	0	0.00%	0.0
Necrophos	Core Safelane	1	1.25%	35.44	4.43	1	100.00%	0.2	0	100.00%	0.0
Spirit Breaker	Support Safelane	1	1.25%	34.81	0.63	1	100.00%	0.2	0	0.00%	0.0
Pugna	Support Offlane	1	1.25%	34.18	3.16	1	100.00%	0.2	0	0.00%	0.0
Lina	Core Midlane	1	1.25%	33.54	2.53	1	100.00%	0.2	0	66.67%	0.0
Void Spirit	Support Offlane	2	2.50%	32.91	11.39	1	100.00%	0.2	1	30.00%	0.1
Void Spirit	Core Safelane	2	2.50%	32.28	10.76	1	100.00%	0.2	1	30.00%	0.1
Sand King	Core Midlane	8	10.00%	31.65	65.82	3	33.33%	0.6	5	41.18%	0.5
Magnus	Core Safelane	8	10.00%	31.01	67.09	3	33.33%	0.6	5	40.00%	0.5
Night Stalker	Core Offlane	4	5.00%	30.38	26.58	2	50.00%	0.4	2	50.00%	0.2
Arc Warden	Core Safelane	9	11.25%	29.75	73.42	3	0.00%	0.6	6	66.67%	0.6
Mars	Core Midlane	6	7.50%	29.11	50.00	2	50.00%	0.4	4	32.26%	0.4
Alchemist	Core Offlane	2	2.50%	28.48	13.29	1	100.00%	0.2	1	0.00%	0.1
Gyrocopter	Core Midlane	2	2.50%	27.85	12.66	1	100.00%	0.2	1	0.00%	0.1
Axe	Core Offlane	12	15.00%	27.22	94.94	5	20.00%	1.0	7	28.57%	0.7
Riki	Core Midlane	13	16.25%	26.58	96.84	7	14.29%	1.4	6	37.50%	0.6
Abaddon	Support Safelane	6	7.50%	25.95	70.25	4	25.00%	0.8	2	50.00%	0.2
Winter Wyvern	Support Offlane	2	2.50%	25.32	18.99	2	50.00%	0.4	0	0.00%	0.0
Shadow Demon	Support Offlane	2	2.50%	25.32	18.99	2	50.00%	0.4	0	0.00%	0.0
Dark Willow	Support Offlane	2	2.50%	25.32	18.99	2	50.00%	0.4	0	0.00%	0.0
Enchantress	Support Safelane	7	8.75%	23.42	72.15	2	0.00%	0.4	5	47.37%	0.5
Keeper of the Light	Support Safelane	4	5.00%	22.78	55.70	3	33.33%	0.6	1	0.00%	0.1
Templar Assassin	Core Safelane	5	6.25%	22.15	62.03	2	0.00%	0.4	3	61.90%	0.3
Leshrac	Core Midlane	10	12.50%	21.52	94.30	3	0.00%	0.6	7	33.33%	0.7
Doom	Core Midlane	5	6.25%	20.89	62.66	2	0.00%	0.4	3	60.00%	0.3
Sand King	Support Offlane	8	10.00%	20.25	91.77	3	0.00%	0.6	5	41.18%	0.5
Tiny	Support Offlane	7	8.75%	19.62	89.24	4	0.00%	0.8	3	68.42%	0.3
Elder Titan	Core Offlane	3	3.75%	18.99	35.44	1	0.00%	0.2	2	64.29%	0.2
Venomancer	Core Safelane	3	3.75%	18.35	37.97	1	0.00%	0.2	2	60.00%	0.2
Doom	Core Safelane	3	3.75%	18.35	37.97	1	0.00%	0.2	2	60.00%	0.2
Ursa	Core Offlane	3	3.75%	17.09	41.14	1	0.00%	0.2	2	50.00%	0.2
Razor	Core Midlane	4	5.00%	16.46	64.56	2	0.00%	0.4	2	57.14%	0.2
Centaur Warrunner	Support Offlane	3	3.75%	15.82	42.41	1	0.00%	0.2	2	47.62%	0.2
Necrophos	Core Offlane	3	3.75%	15.19	54.43	2	0.00%	0.4	1	100.00%	0.1
Drow Ranger	Core Safelane	4	5.00%	14.56	66.46	2	0.00%	0.4	2	50.00%	0.2
Bloodseeker	Core Offlane	6	7.50%	13.92	92.41	3	0.00%	0.6	3	33.33%	0.3
Treant Protector	Support Safelane	5	6.25%	13.29	88.61	4	0.00%	0.8	1	100.00%	0.1
Leshrac	Support Offlane	3	3.75%	12.66	51.27	1	0.00%	0.2	2	33.33%	0.2
Mirana	Core Offlane	3	3.75%	12.03	58.86	2	0.00%	0.4	1	61.54%	0.1
Queen of Pain	Core Offlane	2	2.50%	11.39	39.24	1	0.00%	0.2	1	50.00%	0.1
Earth Spirit	Core Midlane	2	2.50%	10.76	39.87	1	0.00%	0.2	1	50.00%	0.1
Shadow Shaman	Support Offlane	3	3.75%	10.13	81.65	3	0.00%	0.6	0	0.00%	0.0
Naga Siren	Core Safelane	1	1.25%	9.49	34.18	1	0.00%	0.2	0	0.00%	0.0
Sniper	Core Safelane	1	1.25%	9.49	34.18	1	0.00%	0.2	0	0.00%	0.0
Pangolier	Core Midlane	1	1.25%	8.23	29.11	1	0.00%	0.2	0	0.00%	0.0
Clinkz	Core Safelane	1	1.25%	7.59	34.18	1	0.00%	0.2	0	0.00%	0.0
Hoodwink	Support Safelane	1	1.25%	6.96	32.28	1	0.00%	0.2	0	0.00%	0.0
Tusk	Support Safelane	1	1.25%	6.33	31.65	1	0.00%	0.2	0	83.33%	0.0
Skywrath Mage	Support Offlane	3	3.75%	5.70	75.32	2	0.00%	0.4	1	0.00%	0.1
Pudge	Support Safelane	1	1.25%	5.06	31.01	1	0.00%	0.2	0	0.00%	0.0
Pugna	Core Offlane	2	2.50%	4.43	59.49	2	0.00%	0.4	0	0.00%	0.0
Tusk	Core Offlane	1	1.25%	3.80	30.38	1	0.00%	0.2	0	83.33%	0.0
Gyrocopter	Core Safelane	2	2.50%	3.16	52.53	1	0.00%	0.2	1	0.00%	0.1
Abaddon	Support Offlane	1	1.25%	2.53	29.75	1	0.00%	0.2	0	50.00%	0.0
Spirit Breaker	Support Offlane	2	2.50%	1.90	60.13	2	0.00%	0.4	0	0.00%	0.0
Alchemist	Core Safelane	2	2.50%	1.27	52.53	1	0.00%	0.2	1	0.00%	0.1
Lina	Core Offlane	1	1.25%	0.63	29.11	1	0.00%	0.2	0	66.67%	0.0