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: 43

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

Balance rank	Winrate	Pickrate	Contest Rate
34.0	40.1	29.7	24.3

Hero	Position	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Tiny	Support Offlane	21	48.84%	100.00	48.91	14	78.57%	3.5	7	54.55%	1.2
Beastmaster	Core Offlane	41	95.35%	99.27	83.94	13	61.54%	3.3	28	60.71%	4.7
Medusa	Core Safelane	25	58.14%	98.54	67.88	4	75.00%	1.0	21	61.90%	3.5
Lycan	Core Offlane	21	48.84%	97.81	59.12	5	80.00%	1.3	16	57.89%	2.7
Tiny	Core Midlane	13	30.23%	97.08	35.04	9	77.78%	2.3	4	54.55%	0.7
Batrider	Core Offlane	14	32.56%	96.35	33.58	2	100.00%	0.5	12	66.67%	2.0
Ogre Magi	Support Safelane	4	9.30%	95.62	3.65	4	100.00%	1.0	0	0.00%	0.0
Kunkka	Core Midlane	14	32.56%	94.89	51.82	4	100.00%	1.0	10	40.00%	1.7
Lifestealer	Core Safelane	14	32.56%	94.16	54.01	5	80.00%	1.3	9	50.00%	1.5
Visage	Core Offlane	10	23.26%	93.43	30.66	2	100.00%	0.5	8	58.33%	1.3
Void Spirit	Core Midlane	20	46.51%	92.70	79.56	13	46.15%	3.3	7	85.71%	1.2
Bloodseeker	Core Safelane	25	58.14%	91.97	85.40	4	25.00%	1.0	21	61.90%	3.5
Puck	Core Midlane	41	95.35%	91.24	99.27	19	47.37%	4.8	22	36.36%	3.7
Templar Assassin	Core Safelane	12	27.91%	90.51	56.93	4	75.00%	1.0	8	50.00%	1.3
Invoker	Core Midlane	10	23.26%	89.78	36.50	2	50.00%	0.5	8	75.00%	1.3
Bane	Support Offlane	3	6.98%	89.05	1.46	2	100.00%	0.5	1	100.00%	0.2
Pugna	Support Offlane	3	6.98%	89.05	1.46	2	100.00%	0.5	1	100.00%	0.2
Dawnbreaker	Core Safelane	8	18.60%	87.59	32.85	4	75.00%	1.0	4	56.25%	0.7
Necrophos	Core Offlane	9	20.93%	86.86	45.26	4	75.00%	1.0	5	50.00%	0.8
Batrider	Core Midlane	7	16.28%	86.13	24.09	1	100.00%	0.3	6	66.67%	1.0
Timbersaw	Core Offlane	30	69.77%	85.40	97.08	10	50.00%	2.5	20	35.00%	3.3
Marci	Support Offlane	26	60.47%	84.67	94.89	9	55.56%	2.3	17	31.82%	2.8
Juggernaut	Core Safelane	13	30.23%	83.94	68.61	5	60.00%	1.3	8	50.00%	1.3
Monkey King	Core Safelane	18	41.86%	83.21	81.02	4	50.00%	1.0	14	50.00%	2.3
Templar Assassin	Core Midlane	6	13.95%	82.48	23.36	2	100.00%	0.5	4	50.00%	0.7
Io	Support Safelane	15	34.88%	81.75	75.91	5	60.00%	1.3	10	43.75%	1.7
Lifestealer	Core Offlane	5	11.63%	81.02	18.25	2	100.00%	0.5	3	50.00%	0.5
Snapfire	Support Offlane	13	30.23%	80.29	74.45	8	50.00%	2.0	5	55.56%	0.8
Ursa	Core Safelane	4	9.30%	79.56	13.87	2	100.00%	0.5	2	50.00%	0.3
Viper	Support Safelane	12	27.91%	78.83	66.42	3	66.67%	0.8	9	46.15%	1.5
Snapfire	Core Midlane	3	6.98%	78.10	9.49	2	100.00%	0.5	1	55.56%	0.2
Snapfire	Support Safelane	8	18.60%	77.37	49.64	5	60.00%	1.3	3	55.56%	0.5
Keeper of the Light	Core Midlane	17	39.53%	76.64	86.13	5	40.00%	1.3	12	50.00%	2.0
Nature's Prophet	Core Safelane	10	23.26%	75.91	62.04	5	60.00%	1.3	5	42.86%	0.8
Phoenix	Support Offlane	6	13.95%	75.18	29.93	3	66.67%	0.8	3	66.67%	0.5
Bristleback	Core Safelane	11	25.58%	74.45	62.77	2	50.00%	0.5	9	55.56%	1.5
Sven	Core Safelane	2	4.65%	73.72	8.03	2	100.00%	0.5	0	0.00%	0.0
Ogre Magi	Support Offlane	2	4.65%	72.99	7.30	2	100.00%	0.5	0	0.00%	0.0
Chaos Knight	Core Offlane	3	6.98%	72.26	8.76	1	100.00%	0.3	2	87.50%	0.3
Enchantress	Support Offlane	10	23.26%	71.53	61.31	4	50.00%	1.0	6	58.33%	1.0
Skywrath Mage	Support Offlane	17	39.53%	70.80	90.51	8	50.00%	2.0	9	30.00%	1.5
Zeus	Core Midlane	22	51.16%	70.07	96.35	11	36.36%	2.8	11	42.86%	1.8
Ancient Apparition	Support Safelane	4	9.30%	69.34	16.79	2	100.00%	0.5	2	33.33%	0.3
Rubick	Support Offlane	5	11.63%	68.61	27.74	4	75.00%	1.0	1	0.00%	0.2
Gyrocopter	Core Safelane	5	11.63%	67.88	27.01	4	75.00%	1.0	1	0.00%	0.2
Clockwerk	Support Safelane	10	23.26%	67.15	70.07	8	50.00%	2.0	2	50.00%	0.3
Io	Support Offlane	9	20.93%	66.42	58.39	3	66.67%	0.8	6	43.75%	1.0
Faceless Void	Core Safelane	19	44.19%	65.69	93.43	3	33.33%	0.8	16	43.75%	2.7
Dawnbreaker	Core Offlane	17	39.53%	64.96	92.70	9	33.33%	2.3	8	56.25%	1.3
Visage	Core Safelane	5	11.63%	64.23	20.44	1	100.00%	0.3	4	58.33%	0.7
Ember Spirit	Core Midlane	14	32.56%	63.50	81.75	4	25.00%	1.0	10	60.00%	1.7
Queen of Pain	Core Midlane	4	9.30%	62.77	22.63	3	66.67%	0.8	1	100.00%	0.2
Dragon Knight	Core Offlane	4	9.30%	62.04	21.90	3	66.67%	0.8	1	100.00%	0.2
Pangolier	Core Midlane	3	6.98%	61.31	10.22	1	100.00%	0.3	2	75.00%	0.3
Lycan	Core Safelane	4	9.30%	60.58	17.52	1	100.00%	0.3	3	57.89%	0.5
Terrorblade	Core Safelane	15	34.88%	59.85	91.24	6	33.33%	1.5	9	45.45%	1.5
Winter Wyvern	Support Safelane	13	30.23%	59.12	87.59	6	33.33%	1.5	7	50.00%	1.2
Sniper	Core Safelane	10	23.26%	58.39	69.34	1	0.00%	0.3	9	55.56%	1.5
Night Stalker	Core Offlane	11	25.58%	57.66	78.83	2	50.00%	0.5	9	38.46%	1.5
Viper	Support Offlane	8	18.60%	56.93	59.85	2	50.00%	0.5	6	46.15%	1.0
Viper	Core Safelane	4	9.30%	56.20	21.17	1	100.00%	0.3	3	46.15%	0.5
Chaos Knight	Core Safelane	9	20.93%	55.47	71.53	3	0.00%	0.8	6	87.50%	1.0
Abaddon	Support Safelane	3	6.98%	54.74	14.60	1	100.00%	0.3	2	50.00%	0.3
Phantom Assassin	Core Safelane	7	16.28%	54.01	52.55	1	100.00%	0.3	6	33.33%	1.0
Disruptor	Support Safelane	4	9.30%	53.28	32.12	3	66.67%	0.8	1	0.00%	0.2
Terrorblade	Core Offlane	3	6.98%	52.55	16.06	1	100.00%	0.3	2	45.45%	0.3
Winter Wyvern	Core Midlane	2	4.65%	51.82	10.95	1	100.00%	0.3	1	50.00%	0.2
Doom	Core Offlane	9	20.93%	51.09	83.21	6	33.33%	1.5	3	50.00%	0.5
Zeus	Support Offlane	2	4.65%	50.36	11.68	1	100.00%	0.3	1	42.86%	0.2
Mirana	Support Offlane	4	9.30%	49.64	46.72	4	50.00%	1.0	0	0.00%	0.0
Enigma	Support Offlane	3	6.98%	48.91	19.71	1	100.00%	0.3	2	33.33%	0.3
Enigma	Support Safelane	3	6.98%	48.18	18.98	1	100.00%	0.3	2	33.33%	0.3
Bane	Support Safelane	3	6.98%	47.45	24.82	2	50.00%	0.5	1	100.00%	0.2
Skywrath Mage	Support Safelane	2	4.65%	46.72	12.41	1	100.00%	0.3	1	30.00%	0.2
Bounty Hunter	Core Offlane	1	2.33%	45.99	6.57	1	100.00%	0.3	0	0.00%	0.0
Shadow Shaman	Support Offlane	1	2.33%	45.26	5.84	1	100.00%	0.3	0	0.00%	0.0
Crystal Maiden	Support Offlane	1	2.33%	45.26	5.84	1	100.00%	0.3	0	0.00%	0.0
Tusk	Support Offlane	1	2.33%	45.26	5.84	1	100.00%	0.3	0	0.00%	0.0
Disruptor	Support Offlane	1	2.33%	45.26	2.92	1	100.00%	0.3	0	0.00%	0.0
Warlock	Support Offlane	1	2.33%	45.26	2.92	1	100.00%	0.3	0	0.00%	0.0
Dawnbreaker	Support Safelane	6	13.95%	41.61	65.69	3	33.33%	0.8	3	56.25%	0.5
Dazzle	Support Offlane	2	4.65%	40.88	13.14	1	100.00%	0.3	1	25.00%	0.2
Anti-Mage	Core Safelane	4	9.30%	40.15	34.31	2	50.00%	0.5	2	50.00%	0.3
Enigma	Core Offlane	14	32.56%	39.42	98.54	5	20.00%	1.3	9	33.33%	1.5
Winter Wyvern	Support Offlane	8	18.60%	38.69	82.48	4	25.00%	1.0	4	50.00%	0.7
Viper	Core Offlane	12	27.91%	37.96	94.16	3	0.00%	0.8	9	46.15%	1.5
Zeus	Support Safelane	4	9.30%	37.23	44.53	2	50.00%	0.5	2	42.86%	0.3
Nature's Prophet	Core Offlane	4	9.30%	36.50	43.80	2	50.00%	0.5	2	42.86%	0.3
Weaver	Support Offlane	6	13.95%	35.77	67.15	2	0.00%	0.5	4	75.00%	0.7
Axe	Core Offlane	4	9.30%	35.04	50.36	3	33.33%	0.8	1	100.00%	0.2
Wraith King	Core Safelane	4	9.30%	34.31	51.09	3	33.33%	0.8	1	100.00%	0.2
Razor	Core Safelane	9	20.93%	33.58	91.97	5	40.00%	1.3	4	0.00%	0.7
Centaur Warrunner	Core Offlane	2	4.65%	32.85	15.33	1	100.00%	0.3	1	0.00%	0.2
Doom	Support Offlane	3	6.98%	32.12	31.39	2	50.00%	0.5	1	50.00%	0.2
Mars	Core Safelane	3	6.98%	31.39	29.20	1	100.00%	0.3	2	0.00%	0.3
Mars	Core Offlane	3	6.98%	30.66	28.47	1	100.00%	0.3	2	0.00%	0.3
Alchemist	Core Safelane	10	23.26%	29.93	95.62	5	20.00%	1.3	5	28.57%	0.8
Enchantress	Support Safelane	8	18.60%	29.20	88.32	3	0.00%	0.8	5	58.33%	0.8
Dazzle	Support Safelane	6	13.95%	28.47	76.64	3	33.33%	0.8	3	25.00%	0.5
Dragon Knight	Support Offlane	2	4.65%	27.74	26.28	2	50.00%	0.5	0	100.00%	0.0
Rubick	Support Safelane	2	4.65%	27.01	25.55	2	50.00%	0.5	0	0.00%	0.0
Clockwerk	Support Offlane	7	16.28%	26.28	89.05	5	20.00%	1.3	2	50.00%	0.3
Monkey King	Support Offlane	5	11.63%	25.55	60.58	1	0.00%	0.3	4	50.00%	0.7
Razor	Core Offlane	3	6.98%	24.82	45.99	2	50.00%	0.5	1	0.00%	0.2
Jakiro	Support Safelane	3	6.98%	24.09	57.66	3	33.33%	0.8	0	0.00%	0.0
Lina	Core Midlane	6	13.95%	23.36	80.29	2	0.00%	0.5	4	50.00%	0.7
Pangolier	Core Offlane	3	6.98%	22.63	35.77	1	0.00%	0.3	2	75.00%	0.3
Sand King	Core Midlane	5	11.63%	21.90	78.10	3	0.00%	0.8	2	100.00%	0.3
Night Stalker	Core Safelane	5	11.63%	21.17	70.80	1	0.00%	0.3	4	38.46%	0.7
Marci	Support Safelane	9	20.93%	20.44	97.81	3	0.00%	0.8	6	31.82%	1.0
Hoodwink	Support Offlane	5	11.63%	19.71	86.86	5	20.00%	1.3	0	0.00%	0.0
Enchantress	Core Safelane	3	6.98%	18.98	48.18	1	0.00%	0.3	2	58.33%	0.3
Keeper of the Light	Core Offlane	3	6.98%	18.25	56.20	1	0.00%	0.3	2	50.00%	0.3
Underlord	Core Offlane	3	6.98%	18.25	56.20	1	0.00%	0.3	2	50.00%	0.3
Juggernaut	Core Offlane	3	6.98%	18.25	56.20	1	0.00%	0.3	2	50.00%	0.3
Dawnbreaker	Support Offlane	4	9.30%	16.06	75.18	2	0.00%	0.5	2	56.25%	0.3
Venomancer	Core Offlane	4	9.30%	15.33	77.37	2	0.00%	0.5	2	50.00%	0.3
Necrophos	Core Safelane	2	4.65%	14.60	47.45	1	0.00%	0.3	1	50.00%	0.2
Alchemist	Core Midlane	4	9.30%	13.87	84.67	2	0.00%	0.5	2	28.57%	0.3
Ancient Apparition	Support Offlane	2	4.65%	13.14	53.28	1	0.00%	0.3	1	33.33%	0.2
Slardar	Core Offlane	6	13.95%	12.41	100.00	3	0.00%	0.8	3	0.00%	0.5
Slardar	Core Safelane	2	4.65%	11.68	64.23	1	0.00%	0.3	1	0.00%	0.2
Shadow Shaman	Support Safelane	2	4.65%	10.95	73.72	2	0.00%	0.5	0	0.00%	0.0
Windranger	Support Offlane	3	6.98%	10.22	89.78	3	0.00%	0.8	0	0.00%	0.0
Windranger	Core Midlane	1	2.33%	9.49	43.07	1	0.00%	0.3	0	0.00%	0.0
Shadow Fiend	Core Midlane	1	2.33%	9.49	43.07	1	0.00%	0.3	0	0.00%	0.0
Hoodwink	Support Safelane	1	2.33%	8.03	41.61	1	0.00%	0.3	0	0.00%	0.0
Naga Siren	Core Safelane	1	2.33%	7.30	40.88	1	0.00%	0.3	0	0.00%	0.0
Dark Willow	Support Offlane	2	4.65%	6.57	72.26	2	0.00%	0.5	0	0.00%	0.0
Grimstroke	Support Offlane	2	4.65%	5.84	64.96	1	0.00%	0.3	1	0.00%	0.2
Pudge	Core Safelane	2	4.65%	5.11	72.99	2	0.00%	0.5	0	0.00%	0.0
Dark Seer	Core Safelane	1	2.33%	4.38	40.88	1	0.00%	0.3	0	0.00%	0.0
Nyx Assassin	Support Offlane	1	2.33%	3.65	39.42	1	0.00%	0.3	0	0.00%	0.0
Jakiro	Support Offlane	1	2.33%	3.65	39.42	1	0.00%	0.3	0	0.00%	0.0
Oracle	Support Offlane	1	2.33%	3.65	39.42	1	0.00%	0.3	0	0.00%	0.0
Luna	Core Safelane	2	4.65%	1.46	64.23	1	0.00%	0.3	1	0.00%	0.2
Pudge	Support Offlane	1	2.33%	0.73	39.42	1	0.00%	0.3	0	0.00%	0.0