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): 6 - Median hero bans (mb): 6 - Matches: 55

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

Balance rank	Winrate	Pickrate	Contest Rate
43.3	52.4	40.5	21.6

Hero	Position	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Void Spirit	Core Midlane	21	38.18%	100.00	53.74	6	83.33%	1.0	15	61.11%	2.5
Puck	Core Midlane	51	92.73%	99.32	93.20	29	62.07%	4.8	22	36.36%	3.7
Bloodseeker	Core Safelane	32	58.18%	98.64	83.67	8	50.00%	1.3	24	58.33%	4.0
Dazzle	Support Safelane	18	32.73%	97.96	58.50	8	62.50%	1.3	10	66.67%	1.7
Faceless Void	Core Safelane	32	58.18%	97.28	84.35	8	62.50%	1.3	24	50.00%	4.0
Tiny	Support Offlane	27	49.09%	96.60	80.95	19	57.89%	3.2	8	46.67%	1.3
Terrorblade	Core Safelane	13	23.64%	95.92	46.26	7	71.43%	1.2	6	62.50%	1.0
Skywrath Mage	Support Offlane	25	45.45%	95.24	76.19	10	50.00%	1.7	15	66.67%	2.5
Winter Wyvern	Support Safelane	20	36.36%	94.56	65.99	10	70.00%	1.7	10	40.91%	1.7
Visage	Core Offlane	35	63.64%	93.88	90.48	6	33.33%	1.0	29	58.62%	4.8
Juggernaut	Core Safelane	30	54.55%	93.20	88.44	11	45.45%	1.8	19	57.89%	3.2
Enigma	Core Offlane	19	34.55%	92.52	63.95	5	60.00%	0.8	14	58.82%	2.3
Death Prophet	Core Offlane	9	16.36%	91.84	22.45	3	100.00%	0.5	6	50.00%	1.0
Marci	Support Offlane	42	76.36%	91.16	96.60	11	54.55%	1.8	31	40.00%	5.2
Alchemist	Core Safelane	18	32.73%	90.48	67.35	8	50.00%	1.3	10	69.23%	1.7
Viper	Core Offlane	21	38.18%	89.80	74.15	4	75.00%	0.7	17	46.51%	2.8
Night Stalker	Core Offlane	25	45.45%	89.12	85.03	11	54.55%	1.8	14	46.67%	2.3
Dawnbreaker	Core Offlane	29	52.73%	88.44	91.16	12	41.67%	2.0	17	58.62%	2.8
Ogre Magi	Support Safelane	7	12.73%	87.76	25.85	7	71.43%	1.2	0	0.00%	0.0
Beastmaster	Core Offlane	27	49.09%	87.07	89.12	7	57.14%	1.2	20	43.48%	3.3
Alchemist	Core Midlane	5	9.09%	86.39	12.93	2	100.00%	0.3	3	69.23%	0.5
Weaver	Core Safelane	12	21.82%	85.71	48.30	2	100.00%	0.3	10	50.00%	1.7
Bristleback	Core Safelane	41	74.55%	85.03	99.32	11	36.36%	1.8	30	45.45%	5.0
Mars	Core Offlane	10	18.18%	84.35	55.10	8	62.50%	1.3	2	50.00%	0.3
Phoenix	Support Offlane	9	16.36%	83.67	42.86	5	80.00%	0.8	4	28.57%	0.7
Batrider	Core Offlane	15	27.27%	82.99	66.67	6	50.00%	1.0	9	61.54%	1.5
Zeus	Core Midlane	26	47.27%	82.31	91.84	6	50.00%	1.0	20	44.12%	3.3
Io	Support Safelane	10	18.18%	81.63	49.66	5	60.00%	0.8	5	66.67%	0.8
Templar Assassin	Core Safelane	17	30.91%	80.95	76.87	9	66.67%	1.5	8	18.18%	1.3
Winter Wyvern	Support Offlane	18	32.73%	80.27	78.91	9	55.56%	1.5	9	40.91%	1.5
Keeper of the Light	Support Offlane	13	23.64%	79.59	61.22	4	100.00%	0.7	9	20.00%	1.5
Razor	Core Safelane	13	23.64%	78.91	63.27	3	66.67%	0.5	10	46.67%	1.7
Razor	Core Offlane	22	40.00%	78.23	89.80	5	40.00%	0.8	17	46.67%	2.8
Chaos Knight	Core Safelane	11	20.00%	77.55	54.42	1	0.00%	0.2	10	70.00%	1.7
Kunkka	Core Safelane	7	12.73%	76.87	25.17	2	100.00%	0.3	5	42.86%	0.8
Nature's Prophet	Support Offlane	6	10.91%	76.19	26.53	4	75.00%	0.7	2	33.33%	0.3
Bounty Hunter	Core Offlane	4	7.27%	75.51	17.01	4	75.00%	0.7	0	0.00%	0.0
Ember Spirit	Core Midlane	10	18.18%	74.83	57.14	4	50.00%	0.7	6	62.50%	1.0
Death Prophet	Core Midlane	9	16.36%	74.15	50.34	3	66.67%	0.5	6	50.00%	1.0
Dawnbreaker	Core Midlane	7	12.73%	73.47	35.37	3	66.67%	0.5	4	58.62%	0.7
Axe	Core Offlane	2	3.64%	72.79	0.68	2	100.00%	0.3	0	0.00%	0.0
Hoodwink	Support Offlane	2	3.64%	72.11	8.84	2	100.00%	0.3	0	0.00%	0.0
Tiny	Core Midlane	22	40.00%	71.43	95.24	16	37.50%	2.7	6	46.67%	1.0
Clockwerk	Support Offlane	14	25.45%	70.75	79.59	9	44.44%	1.5	5	50.00%	0.8
Marci	Support Safelane	12	21.82%	70.07	64.63	3	66.67%	0.5	9	40.00%	1.5
Warlock	Support Offlane	6	10.91%	69.39	34.69	4	75.00%	0.7	2	16.67%	0.3
Enchantress	Support Offlane	17	30.91%	68.71	92.52	11	36.36%	1.8	6	55.56%	1.0
Morphling	Support Offlane	4	7.27%	68.03	13.61	1	100.00%	0.2	3	66.67%	0.5
Enchantress	Support Safelane	9	16.36%	67.35	62.59	6	50.00%	1.0	3	55.56%	0.5
Kunkka	Core Midlane	13	23.64%	66.67	74.83	4	50.00%	0.7	9	42.86%	1.5
Monkey King	Core Safelane	8	14.55%	65.99	52.38	3	66.67%	0.5	5	42.86%	0.8
Nyx Assassin	Support Offlane	8	14.55%	65.31	53.06	3	66.67%	0.5	5	42.86%	0.8
Doom	Core Offlane	6	10.91%	64.63	36.73	4	50.00%	0.7	2	100.00%	0.3
Monkey King	Support Offlane	11	20.00%	63.95	70.75	4	50.00%	0.7	7	42.86%	1.2
Viper	Core Safelane	11	20.00%	63.27	65.31	2	50.00%	0.3	9	46.51%	1.5
Brewmaster	Support Safelane	4	7.27%	62.59	18.37	3	66.67%	0.5	1	75.00%	0.2
Enigma	Support Offlane	4	7.27%	61.90	15.65	1	100.00%	0.2	3	58.82%	0.5
Queen of Pain	Core Midlane	5	9.09%	61.22	27.89	3	66.67%	0.5	2	50.00%	0.3
Venomancer	Core Offlane	5	9.09%	60.54	27.21	3	66.67%	0.5	2	50.00%	0.3
Tidehunter	Core Safelane	2	3.64%	59.86	1.36	1	100.00%	0.2	1	100.00%	0.2
Underlord	Core Offlane	2	3.64%	59.18	2.04	1	100.00%	0.2	1	100.00%	0.2
Naga Siren	Support Offlane	2	3.64%	58.50	2.72	1	100.00%	0.2	1	100.00%	0.2
Naga Siren	Core Safelane	2	3.64%	57.82	4.08	1	100.00%	0.2	1	100.00%	0.2
Lifestealer	Core Safelane	2	3.64%	57.82	4.08	1	100.00%	0.2	1	100.00%	0.2
Abaddon	Support Offlane	2	3.64%	56.46	4.76	1	100.00%	0.2	1	100.00%	0.2
Timbersaw	Core Offlane	22	40.00%	55.78	97.28	7	14.29%	1.2	15	52.38%	2.5
Zeus	Support Offlane	18	32.73%	55.10	94.56	4	25.00%	0.7	14	44.12%	2.3
Lycan	Core Safelane	3	5.45%	54.42	12.24	1	100.00%	0.2	2	66.67%	0.3
Brewmaster	Core Offlane	6	10.91%	53.74	46.94	4	50.00%	0.7	2	75.00%	0.3
Lina	Core Midlane	12	21.82%	53.06	81.63	5	40.00%	0.8	7	42.86%	1.2
Ursa	Core Safelane	8	14.55%	52.38	56.46	2	50.00%	0.3	6	50.00%	1.0
Necrophos	Core Midlane	4	7.27%	51.70	16.33	1	100.00%	0.2	3	50.00%	0.5
Bristleback	Support Offlane	4	7.27%	51.02	17.69	1	100.00%	0.2	3	45.45%	0.5
Keeper of the Light	Core Midlane	9	16.36%	50.34	68.03	3	66.67%	0.5	6	20.00%	1.0
Templar Assassin	Core Midlane	6	10.91%	49.66	51.02	3	66.67%	0.5	3	18.18%	0.5
Io	Support Offlane	2	3.64%	48.98	9.52	1	100.00%	0.2	1	66.67%	0.2
Terrorblade	Support Offlane	2	3.64%	48.30	10.20	1	100.00%	0.2	1	62.50%	0.2
Storm Spirit	Core Midlane	4	7.27%	47.62	34.01	3	66.67%	0.5	1	0.00%	0.2
Dawnbreaker	Support Offlane	5	9.09%	46.94	36.05	2	50.00%	0.3	3	58.62%	0.5
Nyx Assassin	Support Safelane	3	5.45%	46.26	14.97	1	100.00%	0.2	2	42.86%	0.3
Monkey King	Core Offlane	3	5.45%	45.58	14.29	1	100.00%	0.2	2	42.86%	0.3
Queen of Pain	Support Offlane	2	3.64%	44.90	10.88	1	100.00%	0.2	1	50.00%	0.2
Dawnbreaker	Support Safelane	7	12.73%	44.22	61.90	3	33.33%	0.5	4	58.62%	0.7
Medusa	Core Safelane	7	12.73%	43.54	59.18	2	50.00%	0.3	5	40.00%	0.8
Night Stalker	Core Safelane	2	3.64%	42.86	11.56	1	100.00%	0.2	1	46.67%	0.2
Dazzle	Support Offlane	4	7.27%	42.18	29.93	2	50.00%	0.3	2	66.67%	0.3
Bane	Support Offlane	3	5.45%	41.50	19.05	2	50.00%	0.3	1	100.00%	0.2
Bane	Support Safelane	3	5.45%	40.82	19.73	2	50.00%	0.3	1	100.00%	0.2
Tusk	Support Offlane	1	1.82%	40.14	7.48	1	100.00%	0.2	0	0.00%	0.0
Rubick	Core Midlane	1	1.82%	39.46	8.16	1	100.00%	0.2	0	0.00%	0.0
Nature's Prophet	Core Offlane	1	1.82%	38.78	6.80	1	100.00%	0.2	0	33.33%	0.0
Snapfire	Support Safelane	1	1.82%	38.10	6.12	1	100.00%	0.2	0	0.00%	0.0
Legion Commander	Core Offlane	1	1.82%	37.41	5.44	1	100.00%	0.2	0	0.00%	0.0
Viper	Support Safelane	11	20.00%	36.73	86.39	2	0.00%	0.3	9	46.51%	1.5
Viper	Core Midlane	11	20.00%	36.05	87.07	2	0.00%	0.3	9	46.51%	1.5
Brewmaster	Support Offlane	3	5.45%	35.37	23.81	2	50.00%	0.3	1	75.00%	0.2
Chen	Support Offlane	3	5.45%	35.37	23.81	2	50.00%	0.3	1	75.00%	0.2
Chen	Support Safelane	8	14.55%	34.01	82.31	5	20.00%	0.8	3	75.00%	0.5
Snapfire	Support Offlane	7	12.73%	33.33	78.23	5	40.00%	0.8	2	0.00%	0.3
Dragon Knight	Core Offlane	3	5.45%	32.65	29.25	2	50.00%	0.3	1	50.00%	0.2
Clockwerk	Support Safelane	3	5.45%	31.97	28.57	2	50.00%	0.3	1	50.00%	0.2
Warlock	Support Safelane	12	21.82%	31.29	97.96	8	25.00%	1.3	4	16.67%	0.7
Tiny	Core Safelane	3	5.45%	30.61	30.61	2	50.00%	0.3	1	46.67%	0.2
Luna	Core Safelane	7	12.73%	29.93	73.47	2	0.00%	0.3	5	60.00%	0.8
Dark Seer	Core Offlane	3	5.45%	29.25	24.49	1	0.00%	0.2	2	100.00%	0.3
Phoenix	Support Safelane	6	10.91%	28.57	72.79	3	33.33%	0.5	3	28.57%	0.5
Crystal Maiden	Support Safelane	2	3.64%	27.89	20.41	2	50.00%	0.3	0	0.00%	0.0
Shadow Fiend	Core Midlane	2	3.64%	27.21	21.09	2	50.00%	0.3	0	0.00%	0.0
Leshrac	Core Safelane	2	3.64%	26.53	21.77	2	50.00%	0.3	0	0.00%	0.0
Nature's Prophet	Core Safelane	4	7.27%	25.85	60.54	3	33.33%	0.5	1	33.33%	0.2
Jakiro	Support Offlane	3	5.45%	25.17	42.18	2	50.00%	0.3	1	0.00%	0.2
Void Spirit	Support Offlane	4	7.27%	24.49	48.98	1	0.00%	0.2	3	61.11%	0.5
Batrider	Core Midlane	7	12.73%	23.81	85.71	3	0.00%	0.5	4	61.54%	0.7
Timbersaw	Core Midlane	6	10.91%	23.13	75.51	2	0.00%	0.3	4	52.38%	0.7
Mirana	Support Offlane	5	9.09%	22.45	70.07	2	0.00%	0.3	3	60.00%	0.5
Phantom Lancer	Core Safelane	6	10.91%	21.77	82.99	3	33.33%	0.5	3	0.00%	0.5
Pudge	Core Offlane	4	7.27%	21.09	72.11	4	25.00%	0.7	0	0.00%	0.0
Pudge	Core Safelane	4	7.27%	20.41	71.43	4	25.00%	0.7	0	0.00%	0.0
Necrophos	Core Offlane	4	7.27%	19.73	55.78	1	0.00%	0.2	3	50.00%	0.5
Rubick	Support Offlane	5	9.09%	19.05	80.27	4	25.00%	0.7	1	0.00%	0.2
Lycan	Core Offlane	3	5.45%	18.37	44.22	1	0.00%	0.2	2	66.67%	0.3
Razor	Core Midlane	4	7.27%	17.69	57.82	1	0.00%	0.2	3	46.67%	0.5
Ember Spirit	Support Safelane	3	5.45%	17.01	45.58	1	0.00%	0.2	2	62.50%	0.3
Beastmaster	Support Offlane	4	7.27%	16.33	59.86	1	0.00%	0.2	3	43.48%	0.5
Mirana	Core Offlane	3	5.45%	15.65	47.62	1	0.00%	0.2	2	60.00%	0.3
Jakiro	Support Safelane	8	14.55%	14.97	98.64	6	16.67%	1.0	2	0.00%	0.3
Pangolier	Core Offlane	2	3.64%	14.29	33.33	1	0.00%	0.2	1	100.00%	0.2
Dark Willow	Support Offlane	2	3.64%	13.61	32.65	1	0.00%	0.2	1	100.00%	0.2
Dark Willow	Support Safelane	2	3.64%	12.93	31.29	1	0.00%	0.2	1	100.00%	0.2
Windranger	Support Offlane	2	3.64%	12.24	32.65	1	0.00%	0.2	1	100.00%	0.2
Timbersaw	Support Offlane	3	5.45%	11.56	51.70	1	0.00%	0.2	2	52.38%	0.3
Dragon Knight	Core Midlane	7	12.73%	10.88	95.92	4	0.00%	0.7	3	50.00%	0.5
Invoker	Core Midlane	7	12.73%	10.20	93.88	1	0.00%	0.2	6	16.67%	1.0
Winter Wyvern	Core Midlane	4	7.27%	9.52	77.55	2	0.00%	0.3	2	40.91%	0.3
Terrorblade	Core Offlane	2	3.64%	8.84	43.54	1	0.00%	0.2	1	62.50%	0.2
Dawnbreaker	Core Safelane	2	3.64%	8.16	44.90	1	0.00%	0.2	1	58.62%	0.2
Earth Spirit	Support Offlane	1	1.82%	7.48	39.46	1	0.00%	0.2	0	0.00%	0.0
Techies	Support Offlane	1	1.82%	7.48	41.50	1	0.00%	0.2	0	0.00%	0.0
Phantom Assassin	Core Safelane	7	12.73%	6.12	100.00	6	0.00%	1.0	1	0.00%	0.2
Crystal Maiden	Support Offlane	2	3.64%	5.44	69.39	2	0.00%	0.3	0	0.00%	0.0
Wraith King	Core Safelane	1	1.82%	4.76	40.14	1	0.00%	0.2	0	0.00%	0.0
Leshrac	Core Midlane	1	1.82%	4.08	38.78	1	0.00%	0.2	0	0.00%	0.0
Spirit Breaker	Core Offlane	1	1.82%	3.40	38.10	1	0.00%	0.2	0	0.00%	0.0
Slardar	Core Offlane	4	7.27%	2.72	87.76	1	0.00%	0.2	3	0.00%	0.5
Rubick	Support Safelane	1	1.82%	2.04	40.82	1	0.00%	0.2	0	0.00%	0.0
Tiny	Support Safelane	1	1.82%	1.36	37.41	1	0.00%	0.2	0	46.67%	0.0
Shadow Shaman	Support Offlane	2	3.64%	0.68	69.39	2	0.00%	0.3	0	0.00%	0.0