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): 4 - Median hero bans (mb): 6 - Matches: 49

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

Balance rank	Winrate	Pickrate	Contest Rate
33.3	34.2	36.0	25.2

Hero	Position	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Invoker	Core Midlane	15	30.61%	100.00	27.22	6	83.33%	1.5	9	77.78%	1.5
Medusa	Core Safelane	28	57.14%	99.37	72.15	10	80.00%	2.5	18	52.38%	3.0
Centaur Warrunner	Core Offlane	43	87.76%	98.73	91.77	18	55.56%	4.5	25	57.69%	4.2
Axe	Core Offlane	9	18.37%	98.10	24.68	6	83.33%	1.5	3	66.67%	0.5
Enchantress	Support Offlane	16	32.65%	97.47	58.86	11	63.64%	2.8	5	80.00%	0.8
Storm Spirit	Core Midlane	30	61.22%	96.84	89.24	9	66.67%	2.3	21	42.86%	3.5
Mirana	Support Offlane	6	12.24%	96.20	20.25	5	80.00%	1.3	1	100.00%	0.2
Earth Spirit	Support Offlane	21	42.86%	95.57	81.65	10	60.00%	2.5	11	50.00%	1.8
Undying	Support Safelane	7	14.29%	94.94	25.95	6	83.33%	1.5	1	0.00%	0.2
Dragon Knight	Core Offlane	5	10.20%	94.30	11.39	2	100.00%	0.5	3	80.00%	0.5
Batrider	Core Offlane	12	24.49%	93.67	38.61	1	100.00%	0.3	11	63.64%	1.8
Naga Siren	Core Safelane	10	20.41%	93.04	29.75	1	100.00%	0.3	9	66.67%	1.5
Death Prophet	Core Midlane	16	32.65%	92.41	63.92	2	100.00%	0.5	14	50.00%	2.3
Chaos Knight	Core Safelane	4	8.16%	91.77	3.80	1	100.00%	0.3	3	100.00%	0.5
Tidehunter	Core Offlane	14	28.57%	91.14	61.39	4	75.00%	1.0	10	50.00%	1.7
Beastmaster	Core Offlane	16	32.65%	90.51	71.52	3	33.33%	0.8	13	69.23%	2.2
Void Spirit	Core Midlane	19	38.78%	89.87	83.54	10	50.00%	2.5	9	60.00%	1.5
Tusk	Support Offlane	13	26.53%	89.24	62.03	6	66.67%	1.5	7	50.00%	1.2
Lion	Support Offlane	34	69.39%	88.61	97.47	16	37.50%	4.0	18	55.56%	3.0
Skywrath Mage	Support Offlane	5	10.20%	87.97	19.62	3	100.00%	0.8	2	33.33%	0.3
Snapfire	Support Offlane	19	38.78%	87.34	86.08	12	58.33%	3.0	7	25.00%	1.2
Clockwerk	Support Safelane	6	12.24%	86.71	25.32	4	75.00%	1.0	2	71.43%	0.3
Bristleback	Core Midlane	13	26.53%	86.08	62.66	3	66.67%	0.8	10	53.85%	1.7
Timbersaw	Core Offlane	30	61.22%	85.44	96.84	9	33.33%	2.3	21	51.61%	3.5
Ember Spirit	Core Midlane	21	42.86%	84.81	89.87	9	44.44%	2.3	12	53.85%	2.0
Outworld Destroyer	Core Midlane	8	16.33%	84.18	30.38	2	100.00%	0.5	6	50.00%	1.0
Puck	Core Midlane	35	71.43%	83.54	99.37	8	62.50%	2.0	27	26.47%	4.5
Nyx Assassin	Support Offlane	15	30.61%	82.91	82.28	9	44.44%	2.3	6	71.43%	1.0
Clockwerk	Support Offlane	12	24.49%	82.28	72.78	8	50.00%	2.0	4	71.43%	0.7
Troll Warlord	Core Safelane	14	28.57%	81.65	77.85	5	60.00%	1.3	9	44.44%	1.5
Arc Warden	Core Safelane	3	6.12%	81.01	5.70	1	100.00%	0.3	2	100.00%	0.3
Juggernaut	Core Safelane	20	40.82%	80.38	90.51	7	57.14%	1.8	13	33.33%	2.2
Dark Seer	Core Offlane	5	10.20%	79.75	23.42	3	66.67%	0.8	2	100.00%	0.3
Timbersaw	Core Safelane	10	20.41%	79.11	56.96	3	66.67%	0.8	7	51.61%	1.2
Tusk	Core Offlane	4	8.16%	78.48	13.92	2	100.00%	0.5	2	50.00%	0.3
Lifestealer	Core Safelane	13	26.53%	77.85	74.05	4	50.00%	1.0	9	54.55%	1.5
Wraith King	Core Safelane	14	28.57%	77.22	79.75	6	50.00%	1.5	8	50.00%	1.3
Magnus	Core Midlane	3	6.12%	76.58	10.13	2	100.00%	0.5	1	50.00%	0.2
Shadow Demon	Support Offlane	4	8.16%	75.95	22.78	4	75.00%	1.0	0	0.00%	0.0
Monkey King	Core Safelane	7	14.29%	75.32	29.11	1	100.00%	0.3	6	56.52%	1.0
Faceless Void	Core Safelane	16	32.65%	74.68	87.34	6	50.00%	1.5	10	40.00%	1.7
Vengeful Spirit	Support Safelane	2	4.08%	74.05	8.23	2	100.00%	0.5	0	0.00%	0.0
Nature's Prophet	Core Offlane	2	4.08%	73.42	7.59	2	100.00%	0.5	0	0.00%	0.0
Night Stalker	Core Offlane	2	4.08%	73.42	7.59	2	100.00%	0.5	0	0.00%	0.0
Hoodwink	Support Offlane	2	4.08%	72.15	3.16	2	100.00%	0.5	0	0.00%	0.0
Kunkka	Core Midlane	10	20.41%	71.52	68.99	5	80.00%	1.3	5	0.00%	0.8
Grimstroke	Support Offlane	10	20.41%	70.89	73.42	8	50.00%	2.0	2	60.00%	0.3
Grimstroke	Support Safelane	12	24.49%	70.25	82.91	9	44.44%	2.3	3	60.00%	0.5
Morphling	Core Safelane	19	38.78%	69.62	93.67	8	25.00%	2.0	11	60.00%	1.8
Spectre	Core Safelane	7	14.29%	68.99	35.44	1	0.00%	0.3	6	83.33%	1.0
Viper	Core Midlane	7	14.29%	68.35	39.24	2	50.00%	0.5	5	69.23%	0.8
Puck	Core Safelane	9	18.37%	67.72	60.13	2	100.00%	0.5	7	26.47%	1.2
Phantom Lancer	Core Safelane	20	40.82%	67.09	94.94	1	0.00%	0.3	19	42.11%	3.2
Ursa	Core Safelane	19	38.78%	66.46	95.57	5	0.00%	1.3	14	64.29%	2.3
Queen of Pain	Core Safelane	3	6.12%	65.82	15.19	2	100.00%	0.5	1	0.00%	0.2
Rubick	Support Offlane	3	6.12%	65.19	15.82	2	100.00%	0.5	1	0.00%	0.2
Monkey King	Core Offlane	14	28.57%	64.56	85.44	2	0.00%	0.5	12	56.52%	2.0
Legion Commander	Core Offlane	9	18.37%	63.92	68.35	3	66.67%	0.8	6	33.33%	1.0
Elder Titan	Support Safelane	16	32.65%	63.29	92.41	7	57.14%	1.8	9	7.69%	1.5
Sand King	Core Offlane	7	14.29%	62.66	55.06	3	66.67%	0.8	4	33.33%	0.7
Bristleback	Core Safelane	4	8.16%	62.03	20.89	1	100.00%	0.3	3	53.85%	0.5
Lina	Support Offlane	6	12.24%	61.39	51.90	3	66.67%	0.8	3	33.33%	0.5
Broodmother	Core Offlane	8	16.33%	60.76	63.29	3	66.67%	0.8	5	28.57%	0.8
Phantom Assassin	Core Safelane	6	12.24%	60.13	54.43	4	50.00%	1.0	2	66.67%	0.3
Morphling	Core Midlane	15	30.61%	59.49	93.04	6	16.67%	1.5	9	60.00%	1.5
Tiny	Core Midlane	16	32.65%	58.86	94.30	4	25.00%	1.0	12	41.67%	2.0
Snapfire	Support Safelane	11	22.45%	58.23	87.97	7	42.86%	1.8	4	25.00%	0.7
Lifestealer	Core Midlane	3	6.12%	57.59	16.46	1	100.00%	0.3	2	54.55%	0.3
Omniknight	Core Offlane	3	6.12%	56.96	24.05	3	66.67%	0.8	0	0.00%	0.0
Medusa	Core Midlane	3	6.12%	56.33	17.72	1	100.00%	0.3	2	52.38%	0.3
Medusa	Core Offlane	3	6.12%	55.70	17.09	1	100.00%	0.3	2	52.38%	0.3
Nyx Assassin	Support Safelane	2	4.08%	55.06	8.86	1	100.00%	0.3	1	71.43%	0.2
Shadow Shaman	Support Offlane	5	10.20%	54.43	36.08	2	50.00%	0.5	3	66.67%	0.5
Slardar	Core Offlane	5	10.20%	53.80	36.71	2	100.00%	0.5	3	0.00%	0.5
Terrorblade	Core Offlane	3	6.12%	53.16	18.99	1	100.00%	0.3	2	50.00%	0.3
Terrorblade	Core Safelane	3	6.12%	52.53	18.35	1	100.00%	0.3	2	50.00%	0.3
Queen of Pain	Core Midlane	4	8.16%	51.90	34.18	3	66.67%	0.8	1	0.00%	0.2
Ancient Apparition	Support Offlane	4	8.16%	51.27	33.54	3	66.67%	0.8	1	0.00%	0.2
Void Spirit	Support Offlane	2	4.08%	50.63	9.49	1	100.00%	0.3	1	60.00%	0.2
Centaur Warrunner	Core Safelane	2	4.08%	50.00	10.76	1	100.00%	0.3	1	57.69%	0.2
Riki	Core Midlane	2	4.08%	49.37	13.29	1	100.00%	0.3	1	50.00%	0.2
Earth Spirit	Support Safelane	2	4.08%	48.73	12.66	1	100.00%	0.3	1	50.00%	0.2
Riki	Core Safelane	2	4.08%	48.10	12.03	1	100.00%	0.3	1	50.00%	0.2
Elder Titan	Support Offlane	7	14.29%	47.47	70.89	3	66.67%	0.8	4	7.69%	0.7
Anti-Mage	Core Safelane	9	18.37%	46.84	78.48	1	0.00%	0.3	8	50.00%	1.3
Pangolier	Core Offlane	4	8.16%	46.20	31.65	2	50.00%	0.5	2	66.67%	0.3
Abaddon	Support Offlane	7	14.29%	45.57	67.72	2	0.00%	0.5	5	77.78%	0.8
Abaddon	Support Safelane	7	14.29%	44.94	67.09	2	0.00%	0.5	5	77.78%	0.8
Juggernaut	Core Offlane	3	6.12%	44.30	21.52	1	100.00%	0.3	2	33.33%	0.3
Doom	Core Safelane	3	6.12%	43.67	22.15	1	100.00%	0.3	2	33.33%	0.3
Huskar	Core Midlane	10	20.41%	43.04	84.18	1	100.00%	0.3	9	22.22%	1.5
Monkey King	Core Midlane	7	14.29%	42.41	65.82	1	0.00%	0.3	6	56.52%	1.0
Windranger	Core Midlane	5	10.20%	41.77	48.73	1	0.00%	0.3	4	75.00%	0.7
Ogre Magi	Support Safelane	1	2.04%	41.14	0.63	1	100.00%	0.3	0	0.00%	0.0
Treant Protector	Support Safelane	1	2.04%	41.14	6.33	1	100.00%	0.3	0	0.00%	0.0
Disruptor	Support Safelane	1	2.04%	41.14	5.06	1	100.00%	0.3	0	0.00%	0.0
Omniknight	Core Midlane	1	2.04%	39.24	4.43	1	100.00%	0.3	0	0.00%	0.0
Alchemist	Core Offlane	1	2.04%	38.61	2.53	1	100.00%	0.3	0	0.00%	0.0
Dark Willow	Support Safelane	1	2.04%	37.97	1.90	1	100.00%	0.3	0	0.00%	0.0
Axe	Core Safelane	1	2.04%	37.34	1.27	1	100.00%	0.3	0	66.67%	0.0
Tusk	Support Safelane	4	8.16%	36.71	37.97	2	50.00%	0.5	2	50.00%	0.3
Leshrac	Core Safelane	2	4.08%	36.08	14.56	1	100.00%	0.3	1	20.00%	0.2
Dark Willow	Support Offlane	5	10.20%	35.44	70.25	5	40.00%	1.3	0	0.00%	0.0
Templar Assassin	Core Midlane	6	12.24%	34.81	59.49	1	0.00%	0.3	5	60.00%	0.8
Pudge	Support Offlane	8	16.33%	34.18	84.81	4	0.00%	1.0	4	100.00%	0.7
Sand King	Core Midlane	4	8.16%	33.54	52.53	2	50.00%	0.5	2	33.33%	0.3
Phoenix	Support Safelane	3	6.12%	32.91	31.01	2	50.00%	0.5	1	50.00%	0.2
Mars	Core Midlane	3	6.12%	32.28	34.81	2	50.00%	0.5	1	37.50%	0.2
Techies	Core Safelane	3	6.12%	31.65	28.48	1	0.00%	0.3	2	100.00%	0.3
Techies	Core Offlane	3	6.12%	31.01	27.85	1	0.00%	0.3	2	100.00%	0.3
Ancient Apparition	Support Safelane	10	20.41%	30.38	98.10	8	25.00%	2.0	2	0.00%	0.3
Viper	Support Offlane	4	8.16%	29.75	51.27	1	0.00%	0.3	3	69.23%	0.5
Viper	Core Offlane	4	8.16%	29.11	50.63	1	0.00%	0.3	3	69.23%	0.5
Viper	Core Safelane	4	8.16%	28.48	50.00	1	0.00%	0.3	3	69.23%	0.5
Luna	Core Safelane	6	12.24%	27.85	80.38	3	33.33%	0.8	3	25.00%	0.5
Slark	Core Safelane	7	14.29%	27.22	88.61	4	25.00%	1.0	3	33.33%	0.5
Witch Doctor	Support Offlane	2	4.08%	26.58	26.58	2	50.00%	0.5	0	0.00%	0.0
Pangolier	Support Offlane	7	14.29%	25.95	86.71	3	0.00%	0.8	4	66.67%	0.7
Necrophos	Core Offlane	3	6.12%	25.32	49.37	2	50.00%	0.5	1	0.00%	0.2
Gyrocopter	Core Safelane	5	10.20%	24.68	65.19	1	100.00%	0.3	4	0.00%	0.7
Lycan	Core Safelane	4	8.16%	24.05	60.76	2	50.00%	0.5	2	0.00%	0.3
Dragon Knight	Core Safelane	3	6.12%	23.42	37.34	1	0.00%	0.3	2	80.00%	0.3
Sven	Core Safelane	5	10.20%	22.78	75.95	2	0.00%	0.5	3	66.67%	0.5
Leshrac	Core Midlane	10	20.41%	22.15	98.73	6	16.67%	1.5	4	20.00%	0.7
Razor	Core Midlane	9	18.37%	21.52	96.20	2	0.00%	0.5	7	30.77%	1.2
Warlock	Support Safelane	6	12.24%	20.89	91.14	4	0.00%	1.0	2	100.00%	0.3
Mars	Core Offlane	18	36.73%	20.25	100.00	11	0.00%	2.8	7	37.50%	1.2
Pudge	Support Safelane	2	4.08%	19.62	32.28	1	0.00%	0.3	1	100.00%	0.2
Visage	Core Offlane	2	4.08%	18.99	32.91	1	0.00%	0.3	1	100.00%	0.2
Timbersaw	Core Midlane	3	6.12%	18.35	55.70	1	0.00%	0.3	2	51.61%	0.3
Razor	Core Offlane	4	8.16%	17.72	74.68	1	0.00%	0.3	3	30.77%	0.5
Razor	Core Safelane	4	8.16%	17.09	75.32	1	0.00%	0.3	3	30.77%	0.5
Oracle	Support Safelane	4	8.16%	16.46	81.01	2	0.00%	0.5	2	50.00%	0.3
Clockwerk	Core Offlane	2	4.08%	15.82	39.87	1	0.00%	0.3	1	71.43%	0.2
Doom	Core Offlane	3	6.12%	15.19	64.56	1	0.00%	0.3	2	33.33%	0.3
Phantom Assassin	Core Offlane	3	6.12%	14.56	76.58	2	0.00%	0.5	1	66.67%	0.2
Ember Spirit	Core Safelane	2	4.08%	13.92	53.16	1	0.00%	0.3	1	53.85%	0.2
Broodmother	Core Midlane	3	6.12%	13.29	69.62	1	0.00%	0.3	2	28.57%	0.3
Phoenix	Support Offlane	2	4.08%	12.66	53.80	1	0.00%	0.3	1	50.00%	0.2
Magnus	Core Offlane	3	6.12%	12.03	79.11	2	0.00%	0.5	1	50.00%	0.2
Skywrath Mage	Core Midlane	2	4.08%	11.39	56.33	1	0.00%	0.3	1	33.33%	0.2
Snapfire	Core Midlane	2	4.08%	10.76	57.59	1	0.00%	0.3	1	25.00%	0.2
Luna	Core Offlane	2	4.08%	10.13	58.23	1	0.00%	0.3	1	25.00%	0.2
Ancient Apparition	Core Midlane	1	2.04%	9.49	44.30	1	0.00%	0.3	0	0.00%	0.0
Tinker	Core Midlane	1	2.04%	9.49	44.30	1	0.00%	0.3	0	0.00%	0.0
Sniper	Core Midlane	1	2.04%	9.49	44.30	1	0.00%	0.3	0	0.00%	0.0
Lone Druid	Core Safelane	1	2.04%	7.59	42.41	1	0.00%	0.3	0	0.00%	0.0
Winter Wyvern	Support Safelane	1	2.04%	6.96	41.77	1	0.00%	0.3	0	0.00%	0.0
Brewmaster	Core Safelane	1	2.04%	6.33	44.94	1	0.00%	0.3	0	0.00%	0.0
Hoodwink	Core Safelane	1	2.04%	6.33	41.14	1	0.00%	0.3	0	0.00%	0.0
Jakiro	Core Midlane	1	2.04%	5.06	46.20	1	0.00%	0.3	0	0.00%	0.0
Silencer	Core Safelane	1	2.04%	4.43	41.14	1	0.00%	0.3	0	0.00%	0.0
Enigma	Support Offlane	1	2.04%	3.80	48.10	1	0.00%	0.3	0	0.00%	0.0
Undying	Support Offlane	1	2.04%	3.80	48.10	1	0.00%	0.3	0	0.00%	0.0
Treant Protector	Support Offlane	1	2.04%	3.80	48.10	1	0.00%	0.3	0	0.00%	0.0
Slardar	Core Safelane	2	4.08%	1.90	66.46	1	0.00%	0.3	1	0.00%	0.2
Underlord	Core Offlane	2	4.08%	1.27	77.22	2	0.00%	0.5	0	0.00%	0.0
Keeper of the Light	Support Offlane	1	2.04%	0.63	46.20	1	0.00%	0.3	0	0.00%	0.0