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.
Balance metric estimates how balanced the meta is (0 to 100)

Median hero picks (mp): 11 - Median hero bans (mb): 11 - Matches: 131

Balance rank	Winrate	Pickrate	Contest Rate
63.6	81.0	47.9	43.0

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Mars	126	96.18%	100.00	79.65	61	62.30%	5.5	65	47.69%	5.9
Weaver	112	85.50%	99.12	83.19	33	60.61%	3.0	79	49.37%	7.2
Rubick	33	25.19%	98.23	32.74	16	62.50%	1.5	17	76.47%	1.5
Monkey King	78	59.54%	97.35	67.26	20	75.00%	1.8	58	43.10%	5.3
Ember Spirit	47	35.88%	96.46	54.87	18	61.11%	1.6	29	62.07%	2.6
Clockwerk	13	9.92%	95.58	14.16	8	87.50%	0.7	5	60.00%	0.5
Beastmaster	67	51.15%	94.69	63.72	19	57.89%	1.7	48	56.25%	4.4
Invoker	94	71.76%	93.81	81.42	31	51.61%	2.8	63	53.97%	5.7
Shadow Demon	25	19.08%	92.92	27.43	14	71.43%	1.3	11	63.64%	1.0
Kunkka	93	70.99%	92.04	84.07	37	56.76%	3.4	56	46.43%	5.1
Tidehunter	78	59.54%	91.15	76.99	35	51.43%	3.2	43	53.49%	3.9
Windranger	8	6.11%	90.27	7.08	7	85.71%	0.6	1	100.00%	0.1
Queen of Pain	77	58.78%	89.38	77.88	31	48.39%	2.8	46	56.52%	4.2
Timbersaw	74	56.49%	88.50	76.11	15	66.67%	1.4	59	45.76%	5.4
Lina	35	26.72%	87.61	44.25	12	66.67%	1.1	23	56.52%	2.1
Bane	47	35.88%	86.73	60.18	36	55.56%	3.3	11	63.64%	1.0
Centaur Warrunner	32	24.43%	85.84	45.13	17	58.82%	1.5	15	66.67%	1.4
Nyx Assassin	45	34.35%	84.96	57.52	7	57.14%	0.6	38	57.89%	3.5
Phantom Lancer	49	37.40%	84.07	59.29	4	50.00%	0.4	45	57.78%	4.1
Abaddon	28	21.37%	83.19	39.82	15	73.33%	1.4	13	38.46%	1.2
Wraith King	30	22.90%	82.30	47.79	15	60.00%	1.4	15	60.00%	1.4
Earth Spirit	29	22.14%	81.42	46.90	16	50.00%	1.5	13	84.62%	1.2
Snapfire	95	72.52%	80.53	99.12	57	43.86%	5.2	38	52.63%	3.5
Hoodwink	32	24.43%	79.65	56.64	27	55.56%	2.5	5	60.00%	0.5
Tusk	25	19.08%	78.76	46.02	19	57.89%	1.7	6	66.67%	0.5
Magnus	36	27.48%	77.88	58.41	13	53.85%	1.2	23	56.52%	2.1
Night Stalker	8	6.11%	76.99	7.96	4	75.00%	0.4	4	100.00%	0.4
Templar Assassin	71	54.20%	76.11	92.04	21	57.14%	1.9	50	38.00%	4.5
Treant Protector	38	29.01%	75.22	62.83	24	50.00%	2.2	14	57.14%	1.3
Luna	66	50.38%	74.34	90.27	21	38.10%	1.9	45	53.33%	4.1
Legion Commander	59	45.04%	73.45	84.96	20	40.00%	1.8	39	53.85%	3.5
Terrorblade	45	34.35%	72.57	66.37	15	60.00%	1.4	30	40.00%	2.7
Faceless Void	37	28.24%	71.68	61.06	11	36.36%	1.0	26	65.38%	2.4
Medusa	71	54.20%	70.80	97.35	26	57.69%	2.4	45	28.89%	4.1
Bloodseeker	47	35.88%	69.91	75.22	19	57.89%	1.7	28	35.71%	2.5
Puck	50	38.17%	69.03	78.76	18	50.00%	1.6	32	43.75%	2.9
Dawnbreaker	25	19.08%	68.14	51.33	13	53.85%	1.2	12	58.33%	1.1
Sven	15	11.45%	67.26	28.32	9	66.67%	0.8	6	50.00%	0.5
Razor	53	40.46%	66.37	85.84	11	45.45%	1.0	42	45.24%	3.8
Morphling	42	32.06%	65.49	71.68	10	60.00%	0.9	32	40.63%	2.9
Io	49	37.40%	64.60	87.61	21	28.57%	1.9	28	67.86%	2.5
Ogre Magi	44	33.59%	63.72	82.30	34	44.12%	3.1	10	50.00%	0.9
Void Spirit	52	39.69%	62.83	92.92	29	44.83%	2.6	23	39.13%	2.1
Disruptor	35	26.72%	61.95	73.45	23	52.17%	2.1	12	25.00%	1.1
Batrider	46	35.11%	61.06	80.53	8	50.00%	0.7	38	42.11%	3.5
Outworld Destroyer	55	41.98%	60.18	96.46	14	35.71%	1.3	41	46.34%	3.7
Broodmother	20	15.27%	59.29	38.05	3	33.33%	0.3	17	64.71%	1.5
Doom	21	16.03%	58.41	50.44	11	54.55%	1.0	10	50.00%	0.9
Troll Warlord	17	12.98%	57.52	41.59	7	42.86%	0.6	10	70.00%	0.9
Gyrocopter	62	47.33%	56.64	100.00	35	31.43%	3.2	27	51.85%	2.5
Dark Seer	19	14.50%	55.75	49.56	8	50.00%	0.7	11	54.55%	1.0
Spirit Breaker	44	33.59%	54.87	94.69	19	26.32%	1.7	25	60.00%	2.3
Lifestealer	14	10.69%	53.98	25.66	1	0.00%	0.1	13	69.23%	1.2
Phantom Assassin	30	22.90%	53.10	74.34	16	43.75%	1.5	14	42.86%	1.3
Viper	30	22.90%	52.21	64.60	3	33.33%	0.3	27	48.15%	2.5
Ursa	49	37.40%	51.33	98.23	11	36.36%	1.0	38	39.47%	3.5
Grimstroke	25	19.08%	50.44	70.80	23	43.48%	2.1	2	50.00%	0.2
Drow Ranger	19	14.50%	49.56	53.10	7	42.86%	0.6	12	58.33%	1.1
Storm Spirit	40	30.53%	48.67	93.81	14	21.43%	1.3	26	57.69%	2.4
Venomancer	11	8.40%	47.79	22.12	2	100.00%	0.2	9	44.44%	0.8
Dark Willow	17	12.98%	46.90	55.75	12	50.00%	1.1	5	40.00%	0.5
Shadow Fiend	9	6.87%	46.02	24.78	8	62.50%	0.7	1	0.00%	0.1
Oracle	12	9.16%	45.13	29.20	4	50.00%	0.4	8	62.50%	0.7
Earthshaker	8	6.11%	44.25	23.01	7	57.14%	0.6	1	100.00%	0.1
Silencer	21	16.03%	43.36	61.95	11	45.45%	1.0	10	40.00%	0.9
Tiny	9	6.87%	42.48	30.09	9	55.56%	0.8	0	0.00%	0.0
Death Prophet	15	11.45%	41.59	52.21	10	50.00%	0.9	5	40.00%	0.5
Mirana	24	18.32%	40.71	69.03	12	50.00%	1.1	12	25.00%	1.1
Leshrac	32	24.43%	39.82	89.38	11	45.45%	1.0	21	28.57%	1.9
Jakiro	11	8.40%	38.94	40.71	9	44.44%	0.8	2	100.00%	0.2
Anti-Mage	14	10.69%	38.05	48.67	5	60.00%	0.5	9	33.33%	0.8
Brewmaster	28	21.37%	37.17	88.50	8	12.50%	0.7	20	55.00%	1.8
Sand King	20	15.27%	36.28	69.91	11	27.27%	1.0	9	66.67%	0.8
Phoenix	11	8.40%	35.40	38.94	4	50.00%	0.4	7	42.86%	0.6
Naga Siren	8	6.11%	34.51	21.24	1	100.00%	0.1	7	42.86%	0.6
Lion	19	14.50%	33.63	86.73	17	29.41%	1.5	2	100.00%	0.2
Sniper	12	9.16%	32.74	53.98	5	40.00%	0.5	7	42.86%	0.6
Tinker	9	6.87%	31.86	33.63	4	50.00%	0.4	5	40.00%	0.5
Skywrath Mage	20	15.27%	30.97	91.15	15	33.33%	1.4	5	20.00%	0.5
Bristleback	8	6.11%	30.09	26.55	2	50.00%	0.2	6	50.00%	0.5
Clinkz	3	2.29%	29.20	11.50	3	66.67%	0.3	0	0.00%	0.0
Nature's Prophet	3	2.29%	28.32	6.19	1	100.00%	0.1	2	50.00%	0.2
Elder Titan	7	5.34%	27.43	31.86	4	50.00%	0.4	3	33.33%	0.3
Undying	8	6.11%	26.55	36.28	4	25.00%	0.4	4	75.00%	0.4
Enchantress	5	3.82%	25.66	17.70	0	0.00%	0.0	5	60.00%	0.5
Alchemist	4	3.05%	24.78	13.27	1	0.00%	0.1	3	100.00%	0.3
Witch Doctor	4	3.05%	23.89	20.35	4	50.00%	0.4	0	0.00%	0.0
Underlord	3	2.29%	23.01	12.39	2	50.00%	0.2	1	100.00%	0.1
Chen	1	0.76%	22.12	1.77	1	100.00%	0.1	0	0.00%	0.0
Juggernaut	14	10.69%	21.24	68.14	3	33.33%	0.3	11	27.27%	1.0
Pangolier	15	11.45%	20.35	95.58	7	14.29%	0.6	8	37.50%	0.7
Visage	1	0.76%	19.47	0.88	0	0.00%	0.0	1	100.00%	0.1
Lone Druid	1	0.76%	19.47	5.31	0	0.00%	0.0	1	100.00%	0.1
Enigma	1	0.76%	19.47	5.31	0	0.00%	0.0	1	100.00%	0.1
Riki	1	0.76%	19.47	5.31	0	0.00%	0.0	1	100.00%	0.1
Warlock	1	0.76%	19.47	5.31	0	0.00%	0.0	1	100.00%	0.1
Axe	3	2.29%	15.04	23.89	3	33.33%	0.3	0	0.00%	0.0
Chaos Knight	5	3.82%	14.16	35.40	2	50.00%	0.2	3	0.00%	0.3
Techies	2	1.53%	13.27	10.62	0	0.00%	0.0	2	50.00%	0.2
Pudge	2	1.53%	13.27	10.62	0	0.00%	0.0	2	50.00%	0.2
Pugna	2	1.53%	13.27	10.62	0	0.00%	0.0	2	50.00%	0.2
Dragon Knight	7	5.34%	10.62	72.57	5	20.00%	0.5	2	0.00%	0.2
Arc Warden	5	3.82%	9.73	34.51	0	0.00%	0.0	5	20.00%	0.5
Winter Wyvern	4	3.05%	8.85	42.48	2	0.00%	0.2	2	50.00%	0.2
Ancient Apparition	6	4.58%	7.96	65.49	3	0.00%	0.3	3	33.33%	0.3
Lycan	2	1.53%	7.08	37.17	2	0.00%	0.2	0	0.00%	0.0
Slardar	2	1.53%	6.19	30.97	1	0.00%	0.1	1	0.00%	0.1
Zeus	1	0.76%	5.31	16.81	0	0.00%	0.0	1	0.00%	0.1
Dazzle	1	0.76%	5.31	16.81	0	0.00%	0.0	1	0.00%	0.1
Shadow Shaman	1	0.76%	3.54	19.47	1	0.00%	0.1	0	0.00%	0.0
Keeper of the Light	1	0.76%	2.65	16.81	0	0.00%	0.0	1	0.00%	0.1
Necrophos	1	0.76%	1.77	19.47	1	0.00%	0.1	0	0.00%	0.0
Slark	3	2.29%	0.88	44.25	1	0.00%	0.1	2	0.00%	0.2