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): 7 - Matches: 72

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

Balance rank	Winrate	Pickrate	Contest Rate
39.1	46.5	38.4	18.1

Hero	Position	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Void Spirit	Core Midlane	51	70.83%	100.00	80.25	34	58.82%	8.5	17	66.67%	2.4
Doom	Core Offlane	66	91.67%	99.36	89.81	17	70.59%	4.3	49	48.08%	7.0
Beastmaster	Core Offlane	63	87.50%	98.73	90.45	16	62.50%	4.0	47	51.06%	6.7
Monkey King	Core Safelane	40	55.56%	98.09	76.43	8	37.50%	2.0	32	70.00%	4.6
Medusa	Core Safelane	56	77.78%	97.45	94.27	22	59.09%	5.5	34	46.15%	4.9
Faceless Void	Core Safelane	33	45.83%	96.82	71.97	13	69.23%	3.3	20	50.00%	2.9
Venomancer	Support Safelane	13	18.06%	96.18	25.48	3	100.00%	0.8	10	65.63%	1.4
Dark Seer	Core Offlane	28	38.89%	95.54	63.06	9	55.56%	2.3	19	68.42%	2.7
Queen of Pain	Core Midlane	30	41.67%	94.90	69.43	10	70.00%	2.5	20	50.00%	2.9
Sven	Core Safelane	6	8.33%	94.27	13.38	4	100.00%	1.0	2	50.00%	0.3
Venomancer	Core Offlane	21	29.17%	93.63	56.69	5	60.00%	1.3	16	65.63%	2.3
Monkey King	Core Midlane	10	13.89%	92.99	20.38	2	100.00%	0.5	8	70.00%	1.1
Techies	Support Offlane	50	69.44%	92.36	96.18	34	52.94%	8.5	16	33.33%	2.3
Ember Spirit	Core Midlane	38	52.78%	91.72	84.71	12	50.00%	3.0	26	53.85%	3.7
Batrider	Core Midlane	7	9.72%	91.08	17.20	3	100.00%	0.8	4	64.00%	0.6
Bloodseeker	Core Safelane	48	66.67%	90.45	95.54	14	50.00%	3.5	34	47.73%	4.9
Shadow Demon	Support Safelane	10	13.89%	89.81	30.57	7	85.71%	1.8	3	14.29%	0.4
Pangolier	Core Midlane	55	76.39%	89.17	98.09	22	45.45%	5.5	33	47.06%	4.7
Lich	Support Offlane	5	6.94%	88.54	8.92	3	100.00%	0.8	2	72.73%	0.3
Lich	Support Safelane	20	27.78%	87.90	61.15	11	54.55%	2.8	9	72.73%	1.3
Witch Doctor	Support Safelane	9	12.50%	87.26	21.66	4	100.00%	1.0	5	40.00%	0.7
Disruptor	Support Safelane	9	12.50%	86.62	26.75	6	83.33%	1.5	3	40.00%	0.4
Templar Assassin	Core Safelane	9	12.50%	85.99	22.93	4	75.00%	1.0	5	77.78%	0.7
Morphling	Core Safelane	23	31.94%	85.35	75.80	9	44.44%	2.3	14	62.50%	2.0
Keeper of the Light	Support Offlane	34	47.22%	84.71	92.99	13	46.15%	3.3	21	47.62%	3.0
Slark	Core Safelane	34	47.22%	84.08	92.36	11	36.36%	2.8	23	56.25%	3.3
Visage	Core Offlane	16	22.22%	83.44	60.51	7	71.43%	1.8	9	36.36%	1.3
Phoenix	Support Safelane	20	27.78%	82.80	73.89	8	62.50%	2.0	12	38.46%	1.7
Terrorblade	Core Safelane	44	61.11%	82.17	99.36	12	41.67%	3.0	32	40.63%	4.6
Puck	Core Midlane	25	34.72%	81.53	83.44	8	50.00%	2.0	17	47.06%	2.4
Timbersaw	Core Midlane	28	38.89%	80.89	88.54	8	50.00%	2.0	20	43.75%	2.9
Anti-Mage	Core Offlane	20	27.78%	80.25	71.34	3	33.33%	0.8	17	59.09%	2.4
Spirit Breaker	Support Offlane	26	36.11%	79.62	89.17	18	50.00%	4.5	8	27.27%	1.1
Batrider	Support Offlane	11	15.28%	78.98	49.68	5	60.00%	1.3	6	64.00%	0.9
Ogre Magi	Core Offlane	3	4.17%	78.34	5.73	2	100.00%	0.5	1	100.00%	0.1
Batrider	Core Offlane	24	33.33%	77.71	84.08	11	36.36%	2.8	13	64.00%	1.9
Slark	Support Offlane	6	8.33%	77.07	17.83	2	100.00%	0.5	4	56.25%	0.6
Magnus	Core Safelane	20	27.78%	76.43	78.98	8	62.50%	2.0	12	32.35%	1.7
Storm Spirit	Core Midlane	26	36.11%	75.80	87.26	7	42.86%	1.8	19	47.37%	2.7
Necrophos	Core Offlane	4	5.56%	75.16	10.83	2	100.00%	0.5	2	66.67%	0.3
Silencer	Support Safelane	27	37.50%	74.52	91.72	12	41.67%	3.0	15	47.62%	2.1
Techies	Support Safelane	16	22.22%	73.89	73.25	11	54.55%	2.8	5	33.33%	0.7
Mirana	Support Offlane	14	19.44%	73.25	64.33	9	55.56%	2.3	5	42.86%	0.7
Timbersaw	Core Offlane	17	23.61%	72.61	70.06	5	60.00%	1.3	12	43.75%	1.7
Huskar	Core Midlane	6	8.33%	71.97	19.11	2	50.00%	0.5	4	100.00%	0.6
Bounty Hunter	Support Offlane	4	5.56%	71.34	14.01	2	100.00%	0.5	2	57.14%	0.3
Void Spirit	Core Safelane	3	4.17%	70.70	8.28	2	100.00%	0.5	1	66.67%	0.1
Riki	Core Safelane	3	4.17%	70.06	7.01	1	100.00%	0.3	2	100.00%	0.3
Mirana	Support Safelane	6	8.33%	69.43	26.11	4	75.00%	1.0	2	42.86%	0.3
Undying	Support Safelane	14	19.44%	68.79	67.52	8	50.00%	2.0	6	50.00%	0.9
Underlord	Core Offlane	25	34.72%	68.15	93.63	8	12.50%	2.0	17	68.42%	2.4
Lone Druid	Core Midlane	4	5.56%	67.52	15.29	2	100.00%	0.5	2	50.00%	0.3
Chen	Support Offlane	4	5.56%	66.88	10.19	1	100.00%	0.3	3	80.00%	0.4
Enchantress	Support Safelane	8	11.11%	66.24	31.85	2	100.00%	0.5	6	40.00%	0.9
Anti-Mage	Core Safelane	7	9.72%	65.61	24.84	1	100.00%	0.3	6	59.09%	0.9
Bounty Hunter	Support Safelane	11	15.28%	64.97	59.87	6	50.00%	1.5	5	57.14%	0.7
Magnus	Core Offlane	32	44.44%	64.33	100.00	13	38.46%	3.3	19	32.35%	2.7
Bloodseeker	Core Offlane	14	19.44%	63.69	66.24	4	50.00%	1.0	10	47.73%	1.4
Mars	Core Offlane	12	16.67%	63.06	62.42	6	50.00%	1.5	6	50.00%	0.9
Oracle	Support Safelane	17	23.61%	62.42	82.80	9	44.44%	2.3	8	41.67%	1.1
Axe	Core Offlane	17	23.61%	61.78	79.62	3	33.33%	0.8	14	50.00%	2.0
Pugna	Support Offlane	10	13.89%	61.15	57.96	6	50.00%	1.5	4	55.56%	0.6
Spirit Breaker	Core Offlane	3	4.17%	60.51	12.10	2	100.00%	0.5	1	27.27%	0.1
Medusa	Core Offlane	8	11.11%	59.87	46.50	3	66.67%	0.8	5	46.15%	0.7
Tidehunter	Core Offlane	14	19.44%	59.24	74.52	4	25.00%	1.0	10	60.00%	1.4
Naga Siren	Core Safelane	17	23.61%	58.60	82.17	2	50.00%	0.5	15	40.00%	2.1
Skywrath Mage	Support Offlane	22	30.56%	57.96	96.82	12	33.33%	3.0	10	40.00%	1.4
Ursa	Core Safelane	11	15.28%	57.32	63.69	4	50.00%	1.0	7	42.86%	1.0
Shadow Demon	Support Offlane	12	16.67%	56.69	75.16	8	50.00%	2.0	4	14.29%	0.6
Elder Titan	Support Safelane	2	2.78%	56.05	6.37	1	100.00%	0.3	1	100.00%	0.1
Underlord	Core Safelane	3	4.17%	55.41	11.46	1	100.00%	0.3	2	68.42%	0.3
Omniknight	Core Offlane	3	4.17%	54.78	12.74	1	100.00%	0.3	2	66.67%	0.3
Silencer	Support Offlane	11	15.28%	54.14	72.61	5	40.00%	1.3	6	47.62%	0.9
Phantom Lancer	Core Safelane	8	11.11%	53.50	52.23	2	50.00%	0.5	6	50.00%	0.9
Templar Assassin	Support Offlane	2	2.78%	52.87	7.64	1	100.00%	0.3	1	77.78%	0.1
Doom	Support Offlane	4	5.56%	52.23	18.47	1	100.00%	0.3	3	48.08%	0.4
Dark Willow	Core Midlane	3	4.17%	51.59	19.75	3	66.67%	0.8	0	0.00%	0.0
Slark	Core Offlane	6	8.33%	50.96	42.68	2	50.00%	0.5	4	56.25%	0.6
Faceless Void	Core Offlane	3	4.17%	50.32	16.56	1	100.00%	0.3	2	50.00%	0.3
Invoker	Core Midlane	3	4.17%	49.68	15.92	1	100.00%	0.3	2	50.00%	0.3
Clinkz	Support Offlane	15	20.83%	49.04	94.90	10	40.00%	2.5	5	0.00%	0.7
Disruptor	Support Offlane	6	8.33%	48.41	51.59	4	50.00%	1.0	2	40.00%	0.3
Enchantress	Core Safelane	4	5.56%	47.77	21.02	1	100.00%	0.3	3	40.00%	0.4
Templar Assassin	Core Midlane	6	8.33%	47.13	50.96	3	33.33%	0.8	3	77.78%	0.4
Enchantress	Support Offlane	8	11.11%	46.50	57.32	2	50.00%	0.5	6	40.00%	0.9
Winter Wyvern	Core Offlane	2	2.78%	45.86	9.55	1	100.00%	0.3	1	50.00%	0.1
Windranger	Core Safelane	10	13.89%	45.22	81.53	6	33.33%	1.5	4	40.00%	0.6
Razor	Core Offlane	4	5.56%	44.59	22.29	1	100.00%	0.3	3	33.33%	0.4
Chaos Knight	Core Safelane	6	8.33%	43.95	52.87	3	33.33%	0.8	3	66.67%	0.4
Batrider	Support Safelane	4	5.56%	43.31	29.94	2	50.00%	0.5	2	64.00%	0.3
Magnus	Core Midlane	2	2.78%	42.68	14.65	1	100.00%	0.3	1	32.35%	0.1
Earthshaker	Support Offlane	1	1.39%	42.04	5.10	1	100.00%	0.3	0	0.00%	0.0
Meepo	Core Offlane	1	1.39%	41.40	4.46	1	100.00%	0.3	0	0.00%	0.0
Techies	Core Offlane	1	1.39%	40.76	3.82	1	100.00%	0.3	0	33.33%	0.0
Void Spirit	Core Offlane	1	1.39%	40.13	3.18	1	100.00%	0.3	0	66.67%	0.0
Clinkz	Core Offlane	1	1.39%	39.49	2.55	1	100.00%	0.3	0	0.00%	0.0
Marci	Support Safelane	1	1.39%	38.85	1.91	1	100.00%	0.3	0	100.00%	0.0
Marci	Core Midlane	1	1.39%	38.22	1.27	1	100.00%	0.3	0	100.00%	0.0
Earth Spirit	Support Offlane	1	1.39%	37.58	0.64	1	100.00%	0.3	0	0.00%	0.0
Juggernaut	Core Safelane	9	12.50%	36.94	80.89	6	33.33%	1.5	3	33.33%	0.4
Legion Commander	Core Offlane	9	12.50%	36.31	70.70	2	50.00%	0.5	7	28.57%	1.0
Clockwerk	Support Safelane	5	6.94%	35.67	50.32	2	50.00%	0.5	3	33.33%	0.4
Visage	Core Midlane	4	5.56%	35.03	41.40	2	50.00%	0.5	2	36.36%	0.3
Chen	Support Safelane	4	5.56%	34.39	31.21	1	0.00%	0.3	3	80.00%	0.4
Tiny	Core Midlane	11	15.28%	33.76	91.08	4	25.00%	1.0	7	28.57%	1.0
Pugna	Support Safelane	13	18.06%	33.12	98.73	8	12.50%	2.0	5	55.56%	0.7
Winter Wyvern	Core Midlane	5	6.94%	32.48	55.41	3	33.33%	0.8	2	50.00%	0.3
Undying	Core Offlane	5	6.94%	31.85	54.78	3	33.33%	0.8	2	50.00%	0.3
Oracle	Support Offlane	9	12.50%	31.21	87.90	5	20.00%	1.3	4	41.67%	0.6
Windranger	Core Offlane	7	9.72%	30.57	77.07	4	25.00%	1.0	3	40.00%	0.4
Snapfire	Support Offlane	2	2.78%	29.94	24.20	2	50.00%	0.5	0	0.00%	0.0
Crystal Maiden	Support Safelane	2	2.78%	29.30	23.57	2	50.00%	0.5	0	0.00%	0.0
Windranger	Core Midlane	8	11.11%	28.66	85.35	5	20.00%	1.3	3	40.00%	0.4
Venomancer	Core Safelane	4	5.56%	28.03	44.59	1	0.00%	0.3	3	65.63%	0.4
Venomancer	Support Offlane	4	5.56%	27.39	43.95	1	0.00%	0.3	3	65.63%	0.4
Spirit Breaker	Support Safelane	6	8.33%	26.75	77.71	4	25.00%	1.0	2	27.27%	0.3
Vengeful Spirit	Support Offlane	4	5.56%	26.11	58.60	3	33.33%	0.8	1	0.00%	0.1
Pudge	Support Offlane	4	5.56%	25.48	65.61	4	25.00%	1.0	0	0.00%	0.0
Omniknight	Core Midlane	3	4.17%	24.84	42.04	1	0.00%	0.3	2	66.67%	0.3
Morphling	Core Midlane	3	4.17%	24.20	43.31	1	0.00%	0.3	2	62.50%	0.3
Io	Support Offlane	2	2.78%	23.57	27.39	1	0.00%	0.3	1	100.00%	0.1
Lycan	Core Midlane	2	2.78%	22.93	28.03	1	0.00%	0.3	1	100.00%	0.1
Shadow Fiend	Core Safelane	2	2.78%	22.29	28.66	1	0.00%	0.3	1	100.00%	0.1
Brewmaster	Core Offlane	2	2.78%	21.66	29.30	1	0.00%	0.3	1	100.00%	0.1
Lifestealer	Core Safelane	4	5.56%	21.02	59.24	1	0.00%	0.3	3	33.33%	0.4
Kunkka	Core Midlane	3	4.17%	20.38	56.05	2	0.00%	0.5	1	100.00%	0.1
Enigma	Core Offlane	4	5.56%	19.75	66.88	2	0.00%	0.5	2	50.00%	0.3
Necrophos	Core Midlane	2	2.78%	19.11	40.76	1	0.00%	0.3	1	66.67%	0.1
Winter Wyvern	Support Offlane	2	2.78%	18.47	45.22	1	0.00%	0.3	1	50.00%	0.1
Pangolier	Core Offlane	2	2.78%	17.83	45.86	1	0.00%	0.3	1	47.06%	0.1
Mirana	Core Offlane	2	2.78%	17.20	47.13	1	0.00%	0.3	1	42.86%	0.1
Winter Wyvern	Support Safelane	3	4.17%	16.56	64.97	2	0.00%	0.5	1	50.00%	0.1
Windranger	Support Offlane	2	2.78%	15.92	47.77	1	0.00%	0.3	1	40.00%	0.1
Rubick	Support Offlane	5	6.94%	15.29	85.99	2	0.00%	0.5	3	16.67%	0.4
Rubick	Support Safelane	5	6.94%	14.65	86.62	2	0.00%	0.5	3	16.67%	0.4
Phoenix	Support Offlane	2	2.78%	14.01	48.41	1	0.00%	0.3	1	38.46%	0.1
Magnus	Support Offlane	2	2.78%	13.38	49.04	1	0.00%	0.3	1	32.35%	0.1
Earthshaker	Core Offlane	1	1.39%	12.74	37.58	1	0.00%	0.3	0	0.00%	0.0
Nyx Assassin	Core Offlane	1	1.39%	12.74	36.31	1	0.00%	0.3	0	0.00%	0.0
Alchemist	Core Safelane	5	6.94%	11.46	97.45	3	0.00%	0.8	2	0.00%	0.3
Abaddon	Core Offlane	1	1.39%	10.83	35.03	1	0.00%	0.3	0	0.00%	0.0
Viper	Core Offlane	3	4.17%	10.19	68.79	1	0.00%	0.3	2	0.00%	0.3
Snapfire	Support Safelane	1	1.39%	9.55	39.49	1	0.00%	0.3	0	0.00%	0.0
Shadow Shaman	Support Safelane	1	1.39%	9.55	39.49	1	0.00%	0.3	0	0.00%	0.0
Marci	Core Offlane	1	1.39%	8.28	33.12	1	0.00%	0.3	0	100.00%	0.0
Earth Spirit	Core Midlane	1	1.39%	7.64	36.94	1	0.00%	0.3	0	0.00%	0.0
Dawnbreaker	Core Safelane	1	1.39%	7.01	34.39	1	0.00%	0.3	0	0.00%	0.0
Drow Ranger	Core Safelane	1	1.39%	7.01	34.39	1	0.00%	0.3	0	0.00%	0.0
Troll Warlord	Core Safelane	1	1.39%	7.01	35.67	1	0.00%	0.3	0	0.00%	0.0
Bane	Support Safelane	2	2.78%	5.10	61.78	2	0.00%	0.5	0	0.00%	0.0
Snapfire	Core Safelane	1	1.39%	4.46	40.13	1	0.00%	0.3	0	0.00%	0.0
Ancient Apparition	Support Safelane	3	4.17%	3.82	68.15	1	0.00%	0.3	2	0.00%	0.3
Lion	Support Offlane	1	1.39%	3.18	38.22	1	0.00%	0.3	0	0.00%	0.0
Leshrac	Core Midlane	3	4.17%	2.55	78.34	2	0.00%	0.5	1	0.00%	0.1
Death Prophet	Core Midlane	2	2.78%	1.91	54.14	1	0.00%	0.3	1	0.00%	0.1
Wraith King	Core Safelane	2	2.78%	1.27	53.50	1	0.00%	0.3	1	0.00%	0.1
Outworld Destroyer	Core Midlane	1	1.39%	0.64	33.12	1	0.00%	0.3	0	0.00%	0.0