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): 9 - Median hero bans (mb): 14 - Matches: 142

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

Balance rank	Winrate	Pickrate	Contest Rate
56.7	70.7	44.6	38.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Dark Seer	22	15.49%	100.00	10.28	6	83.33%	0.7	16	81.25%	1.1
Luna	86	60.56%	99.07	58.88	33	63.64%	3.7	53	60.38%	3.8
Weaver	129	90.85%	98.13	84.11	40	57.50%	4.4	89	51.69%	6.4
Queen of Pain	111	78.17%	97.20	75.70	53	56.60%	5.9	58	51.72%	4.1
Medusa	88	61.97%	96.26	64.49	21	66.67%	2.3	67	52.24%	4.8
Mars	112	78.87%	95.33	80.37	45	60.00%	5.0	67	44.78%	4.8
Timbersaw	75	52.82%	94.39	63.55	19	42.11%	2.1	56	67.86%	4.0
Magnus	26	18.31%	93.46	23.36	9	66.67%	1.0	17	76.47%	1.2
Shadow Demon	22	15.49%	92.52	20.56	13	76.92%	1.4	9	55.56%	0.6
Storm Spirit	57	40.14%	91.59	59.81	30	63.33%	3.3	27	48.15%	1.9
Bane	106	74.65%	90.65	86.92	65	53.85%	7.2	41	43.90%	2.9
Treant Protector	26	18.31%	89.72	30.84	15	66.67%	1.7	11	72.73%	0.8
Wraith King	49	34.51%	88.79	56.07	28	57.14%	3.1	21	61.90%	1.5
Brewmaster	20	14.08%	87.85	14.02	3	33.33%	0.3	17	88.24%	1.2
Outworld Destroyer	95	66.90%	86.92	82.24	28	50.00%	3.1	67	52.24%	4.8
Tusk	22	15.49%	85.98	27.10	16	75.00%	1.8	6	33.33%	0.4
Puck	76	53.52%	85.05	71.96	21	52.38%	2.3	55	52.73%	3.9
Nyx Assassin	45	31.69%	84.11	57.01	17	41.18%	1.9	28	75.00%	2.0
Death Prophet	36	25.35%	83.18	51.40	20	60.00%	2.2	16	56.25%	1.1
Phantom Lancer	59	41.55%	82.24	66.36	11	45.45%	1.2	48	56.25%	3.4
Morphling	44	30.99%	81.31	61.68	11	54.55%	1.2	33	54.55%	2.4
Beastmaster	57	40.14%	80.37	69.16	11	63.64%	1.2	46	45.65%	3.3
Snapfire	76	53.52%	79.44	87.85	51	47.06%	5.7	25	48.00%	1.8
Invoker	86	60.56%	78.50	93.46	18	38.89%	2.0	68	50.00%	4.9
Keeper of the Light	14	9.86%	77.57	12.15	4	100.00%	0.4	10	50.00%	0.7
Templar Assassin	64	45.07%	76.64	78.50	30	53.33%	3.3	34	38.24%	2.4
Legion Commander	64	45.07%	75.70	77.57	24	50.00%	2.7	40	45.00%	2.9
Skywrath Mage	23	16.20%	74.77	33.64	8	75.00%	0.9	15	46.67%	1.1
Tidehunter	72	50.70%	73.83	88.79	23	52.17%	2.6	49	40.82%	3.5
Viper	27	19.01%	72.90	43.93	9	66.67%	1.0	18	50.00%	1.3
Lion	25	17.61%	71.96	49.53	21	61.90%	2.3	4	0.00%	0.3
Terrorblade	62	43.66%	71.03	79.44	21	47.62%	2.3	41	46.34%	2.9
Faceless Void	47	33.10%	70.09	67.29	13	30.77%	1.4	34	64.71%	2.4
Leshrac	35	24.65%	69.16	57.94	12	66.67%	1.3	23	39.13%	1.6
Nature's Prophet	25	17.61%	68.22	45.79	12	41.67%	1.3	13	84.62%	0.9
Gyrocopter	42	29.58%	67.29	68.22	25	52.00%	2.8	17	41.18%	1.2
Spirit Breaker	83	58.45%	66.36	99.07	43	37.21%	4.8	40	52.50%	2.9
Io	57	40.14%	65.42	85.05	26	50.00%	2.9	31	38.71%	2.2
Ogre Magi	59	41.55%	64.49	90.65	44	50.00%	4.9	15	13.33%	1.1
Ember Spirit	69	48.59%	63.55	95.33	31	51.61%	3.4	38	28.95%	2.7
Mirana	22	15.49%	62.62	47.66	16	62.50%	1.8	6	16.67%	0.4
Ursa	62	43.66%	61.68	91.59	10	40.00%	1.1	52	44.23%	3.7
Kunkka	61	42.96%	60.75	94.39	29	44.83%	3.2	32	37.50%	2.3
Undying	14	9.86%	59.81	26.17	7	71.43%	0.8	7	42.86%	0.5
Clockwerk	19	13.38%	58.88	44.86	14	57.14%	1.6	5	40.00%	0.4
Pangolier	47	33.10%	57.94	83.18	24	41.67%	2.7	23	47.83%	1.6
Disruptor	35	24.65%	57.01	70.09	21	42.86%	2.3	14	57.14%	1.0
Anti-Mage	20	14.08%	56.07	40.19	5	40.00%	0.6	15	66.67%	1.1
Abaddon	21	14.79%	55.14	48.60	11	54.55%	1.2	10	50.00%	0.7
Monkey King	50	35.21%	54.21	85.98	11	45.45%	1.2	39	41.03%	2.8
Bristleback	17	11.97%	53.27	35.51	6	83.33%	0.7	11	27.27%	0.8
Void Spirit	37	26.06%	52.34	74.77	19	31.58%	2.1	18	66.67%	1.3
Rubick	34	23.94%	51.40	76.64	25	44.00%	2.8	9	33.33%	0.6
Razor	42	29.58%	50.47	81.31	9	11.11%	1.0	33	57.58%	2.4
Bloodseeker	25	17.61%	49.53	62.62	9	55.56%	1.0	16	37.50%	1.1
Drow Ranger	34	23.94%	48.60	73.83	11	36.36%	1.2	23	47.83%	1.6
Hoodwink	28	19.72%	47.66	71.03	18	50.00%	2.0	10	20.00%	0.7
Shadow Shaman	4	2.82%	46.73	3.74	3	100.00%	0.3	1	0.00%	0.1
Phantom Assassin	50	35.21%	45.79	97.20	17	29.41%	1.9	33	45.45%	2.4
Juggernaut	7	4.93%	44.86	5.61	1	0.00%	0.1	6	100.00%	0.4
Batrider	52	36.62%	43.93	98.13	9	33.33%	1.0	43	37.21%	3.1
Lycan	6	4.23%	42.99	4.67	2	50.00%	0.2	4	100.00%	0.3
Sven	19	13.38%	42.06	54.21	9	44.44%	1.0	10	50.00%	0.7
Naga Siren	9	6.34%	41.12	13.08	2	100.00%	0.2	7	42.86%	0.5
Broodmother	21	14.79%	40.19	60.75	6	33.33%	0.7	15	53.33%	1.1
Dark Willow	34	23.94%	39.25	92.52	21	38.10%	2.3	13	30.77%	0.9
Slardar	7	4.93%	38.32	11.21	4	50.00%	0.4	3	100.00%	0.2
Axe	8	5.63%	37.38	21.50	6	50.00%	0.7	2	100.00%	0.1
Troll Warlord	13	9.15%	36.45	37.38	5	40.00%	0.6	8	62.50%	0.6
Doom	22	15.49%	35.51	65.42	10	20.00%	1.1	12	75.00%	0.9
Jakiro	15	10.56%	34.58	53.27	12	41.67%	1.3	3	66.67%	0.2
Lich	2	1.41%	33.64	0.93	2	100.00%	0.2	0	0.00%	0.0
Earth Spirit	9	6.34%	32.71	28.04	6	50.00%	0.7	3	66.67%	0.2
Shadow Fiend	11	7.75%	31.78	42.99	10	50.00%	1.1	1	0.00%	0.1
Grimstroke	37	26.06%	30.84	100.00	24	29.17%	2.7	13	38.46%	0.9
Dragon Knight	8	5.63%	29.91	24.30	5	40.00%	0.6	3	100.00%	0.2
Enchantress	11	7.75%	28.97	41.12	6	50.00%	0.7	5	40.00%	0.4
Silencer	10	7.04%	28.04	38.32	7	42.86%	0.8	3	66.67%	0.2
Chaos Knight	13	9.15%	27.10	46.73	5	40.00%	0.6	8	50.00%	0.6
Night Stalker	28	19.72%	26.17	89.72	8	25.00%	0.9	20	40.00%	1.4
Venomancer	9	6.34%	25.23	28.97	3	66.67%	0.3	6	33.33%	0.4
Lina	28	19.72%	24.30	96.26	6	16.67%	0.7	22	36.36%	1.6
Slark	6	4.23%	23.36	29.91	5	40.00%	0.6	1	100.00%	0.1
Windranger	3	2.11%	22.43	6.54	2	50.00%	0.2	1	100.00%	0.1
Chen	1	0.70%	21.50	1.87	1	100.00%	0.1	0	0.00%	0.0
Techies	6	4.23%	20.56	22.43	1	0.00%	0.1	5	60.00%	0.4
Ancient Apparition	5	3.52%	19.63	19.63	2	50.00%	0.2	3	33.33%	0.2
Sniper	4	2.82%	18.69	18.69	3	33.33%	0.3	1	100.00%	0.1
Necrophos	6	4.23%	17.76	32.71	2	50.00%	0.2	4	25.00%	0.3
Centaur Warrunner	6	4.23%	17.76	32.71	2	50.00%	0.2	4	25.00%	0.3
Sand King	7	4.93%	15.89	39.25	2	0.00%	0.2	5	60.00%	0.4
Pugna	5	3.52%	14.95	34.58	4	25.00%	0.4	1	100.00%	0.1
Visage	2	1.41%	14.02	9.35	2	50.00%	0.2	0	0.00%	0.0
Witch Doctor	2	1.41%	14.02	9.35	2	50.00%	0.2	0	0.00%	0.0
Riki	2	1.41%	14.02	9.35	2	50.00%	0.2	0	0.00%	0.0
Enigma	1	0.70%	11.21	2.80	0	0.00%	0.0	1	100.00%	0.1
Tinker	4	2.82%	10.28	17.76	1	0.00%	0.1	3	66.67%	0.2
Elder Titan	3	2.11%	9.35	16.82	2	50.00%	0.2	1	0.00%	0.1
Oracle	4	2.82%	8.41	25.23	2	50.00%	0.2	2	0.00%	0.1
Lifestealer	8	5.63%	7.48	55.14	1	0.00%	0.1	7	28.57%	0.5
Earthshaker	4	2.82%	6.54	42.06	4	25.00%	0.4	0	0.00%	0.0
Winter Wyvern	5	3.52%	5.61	50.47	4	25.00%	0.4	1	0.00%	0.1
Dawnbreaker	7	4.93%	4.67	72.90	6	16.67%	0.7	1	0.00%	0.1
Underlord	5	3.52%	3.74	52.34	2	0.00%	0.2	3	33.33%	0.2
Spectre	2	1.41%	2.80	36.45	2	0.00%	0.2	0	0.00%	0.0
Zeus	1	0.70%	1.87	15.89	1	0.00%	0.1	0	0.00%	0.0
Omniknight	1	0.70%	1.87	15.89	1	0.00%	0.1	0	0.00%	0.0