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): 4 - Median hero bans (mb): 8 - Matches: 59

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

Balance rank	Winrate	Pickrate	Contest Rate
56.2	75.0	39.7	33.1

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Doom	15	25.42%	100.00	16.09	7	100.00%	1.8	8	62.50%	1.0
Visage	15	25.42%	98.85	25.29	7	85.71%	1.8	8	75.00%	1.0
Beastmaster	25	42.37%	97.70	42.53	5	80.00%	1.3	20	70.00%	2.5
Bloodseeker	30	50.85%	96.55	55.17	8	87.50%	2.0	22	54.55%	2.8
Dragon Knight	51	86.44%	95.40	81.61	23	56.52%	5.8	28	50.00%	3.5
Pugna	51	86.44%	94.25	83.91	17	41.18%	4.3	34	64.71%	4.3
Io	56	94.92%	93.10	86.21	8	37.50%	2.0	48	56.25%	6.0
Sand King	47	79.66%	91.95	74.71	21	61.90%	5.3	26	42.31%	3.3
Storm Spirit	47	79.66%	90.80	77.01	29	55.17%	7.3	18	50.00%	2.3
Phantom Assassin	13	22.03%	89.66	28.74	4	75.00%	1.0	9	77.78%	1.1
Keeper of the Light	35	59.32%	88.51	64.37	15	66.67%	3.8	20	45.00%	2.5
Mirana	19	32.20%	87.36	52.87	14	78.57%	3.5	5	0.00%	0.6
Puck	39	66.10%	86.21	68.97	12	50.00%	3.0	27	59.26%	3.4
Timbersaw	18	30.51%	85.06	47.13	9	66.67%	2.3	9	66.67%	1.1
Underlord	22	37.29%	83.91	59.77	9	55.56%	2.3	13	69.23%	1.6
Medusa	50	84.75%	82.76	88.51	10	30.00%	2.5	40	57.50%	5.0
Abaddon	9	15.25%	81.61	22.99	4	75.00%	1.0	5	80.00%	0.6
Shadow Shaman	27	45.76%	80.46	65.52	17	58.82%	4.3	10	40.00%	1.3
Mars	57	96.61%	79.31	97.70	27	40.74%	6.8	30	43.33%	3.8
Leshrac	12	20.34%	78.16	44.83	8	75.00%	2.0	4	25.00%	0.5
Bane	48	81.36%	77.01	96.55	31	51.61%	7.8	17	11.76%	2.1
Faceless Void	23	38.98%	75.86	63.22	5	40.00%	1.3	18	61.11%	2.3
Phoenix	7	11.86%	74.71	21.84	5	80.00%	1.3	2	50.00%	0.3
Invoker	30	50.85%	73.56	72.41	5	20.00%	1.3	25	60.00%	3.1
Skywrath Mage	19	32.20%	72.41	62.07	11	45.45%	2.8	8	75.00%	1.0
Pangolier	37	62.71%	71.26	89.66	14	42.86%	3.5	23	43.48%	2.9
Terrorblade	15	25.42%	70.11	58.62	6	66.67%	1.5	9	44.44%	1.1
Treant Protector	3	5.08%	68.97	5.75	2	100.00%	0.5	1	100.00%	0.1
Spectre	10	16.95%	67.82	37.93	4	100.00%	1.0	6	16.67%	0.8
Tiny	25	42.37%	66.67	71.26	9	55.56%	2.3	16	37.50%	2.0
Huskar	8	13.56%	65.52	18.39	0	0.00%	0.0	8	75.00%	1.0
Enchantress	34	57.63%	64.37	90.80	19	42.11%	4.8	15	40.00%	1.9
Chaos Knight	51	86.44%	63.22	98.85	17	29.41%	4.3	34	41.18%	4.3
Ember Spirit	35	59.32%	62.07	91.95	16	31.25%	4.0	19	52.63%	2.4
Jakiro	6	10.17%	60.92	26.44	4	75.00%	1.0	2	50.00%	0.3
Grimstroke	33	55.93%	59.77	93.10	17	35.29%	4.3	16	43.75%	2.0
Chen	5	8.47%	58.62	14.94	3	100.00%	0.8	2	0.00%	0.3
Techies	4	6.78%	57.47	9.20	2	100.00%	0.5	2	50.00%	0.3
Death Prophet	31	52.54%	56.32	94.25	14	28.57%	3.5	17	47.06%	2.1
Lina	20	33.90%	55.17	75.86	9	44.44%	2.3	11	36.36%	1.4
Undying	8	13.56%	54.02	36.78	2	50.00%	0.5	6	66.67%	0.8
Night Stalker	5	8.47%	52.87	17.24	2	100.00%	0.5	3	33.33%	0.4
Clockwerk	8	13.56%	51.72	51.72	7	57.14%	1.8	1	0.00%	0.1
Phantom Lancer	9	15.25%	50.57	48.28	4	50.00%	1.0	5	60.00%	0.6
Wraith King	19	32.20%	49.43	73.56	6	33.33%	1.5	13	46.15%	1.6
Drow Ranger	4	6.78%	48.28	11.49	1	100.00%	0.3	3	66.67%	0.4
Lifestealer	9	15.25%	47.13	45.98	2	100.00%	0.5	7	28.57%	0.9
Anti-Mage	20	33.90%	45.98	79.31	3	33.33%	0.8	17	41.18%	2.1
Templar Assassin	16	27.12%	44.83	70.11	6	33.33%	1.5	10	50.00%	1.3
Nature's Prophet	19	32.20%	43.68	78.16	4	50.00%	1.0	15	33.33%	1.9
Windranger	3	5.08%	42.53	10.34	2	100.00%	0.5	1	0.00%	0.1
Shadow Demon	7	11.86%	41.38	43.68	4	75.00%	1.0	3	0.00%	0.4
Batrider	8	13.56%	40.23	41.38	1	0.00%	0.3	7	71.43%	0.9
Lycan	5	8.47%	39.08	29.89	3	66.67%	0.8	2	50.00%	0.3
Morphling	2	3.39%	37.93	1.15	1	100.00%	0.3	1	100.00%	0.1
Monkey King	18	30.51%	36.78	82.76	4	25.00%	1.0	14	42.86%	1.8
Weaver	7	11.86%	35.63	50.57	5	60.00%	1.3	2	0.00%	0.3
Ursa	8	13.56%	34.48	56.32	3	33.33%	0.8	5	60.00%	0.6
Viper	12	20.34%	33.33	67.82	4	0.00%	1.0	8	75.00%	1.0
Hoodwink	19	32.20%	32.18	95.40	16	25.00%	4.0	3	66.67%	0.4
Snapfire	14	23.73%	31.03	87.36	12	25.00%	3.0	2	100.00%	0.3
Razor	15	25.42%	29.89	85.06	4	25.00%	1.0	11	36.36%	1.4
Void Spirit	5	8.47%	28.74	40.23	3	33.33%	0.8	2	100.00%	0.3
Slardar	6	10.17%	27.59	49.43	3	33.33%	0.8	3	66.67%	0.4
Troll Warlord	3	5.08%	26.44	20.69	2	50.00%	0.5	1	100.00%	0.1
Ancient Apparition	3	5.08%	26.44	20.69	2	50.00%	0.5	1	100.00%	0.1
Oracle	1	1.69%	24.14	4.60	1	100.00%	0.3	0	0.00%	0.0
Sven	1	1.69%	24.14	4.60	1	100.00%	0.3	0	0.00%	0.0
Rubick	1	1.69%	24.14	4.60	1	100.00%	0.3	0	0.00%	0.0
Spirit Breaker	1	1.69%	24.14	6.90	1	100.00%	0.3	0	0.00%	0.0
Kunkka	27	45.76%	19.54	100.00	7	14.29%	1.8	20	25.00%	2.5
Necrophos	10	16.95%	18.39	66.67	2	0.00%	0.5	8	50.00%	1.0
Axe	4	6.78%	17.24	32.18	2	50.00%	0.5	2	50.00%	0.3
Dazzle	2	3.39%	16.09	13.79	1	100.00%	0.3	1	0.00%	0.1
Gyrocopter	2	3.39%	16.09	13.79	1	100.00%	0.3	1	0.00%	0.1
Disruptor	8	13.56%	13.79	80.46	8	25.00%	2.0	0	0.00%	0.0
Broodmother	3	5.08%	12.64	27.59	1	0.00%	0.3	2	100.00%	0.3
Tidehunter	4	6.78%	11.49	39.08	1	0.00%	0.3	3	66.67%	0.4
Legion Commander	1	1.69%	10.34	8.05	0	0.00%	0.0	1	100.00%	0.1
Sniper	5	8.47%	9.20	60.92	2	50.00%	0.5	3	0.00%	0.4
Juggernaut	4	6.78%	8.05	57.47	3	33.33%	0.8	1	0.00%	0.1
Centaur Warrunner	2	3.39%	6.90	31.03	1	0.00%	0.3	1	100.00%	0.1
Queen of Pain	2	3.39%	5.75	54.02	1	0.00%	0.3	1	0.00%	0.1
Magnus	1	1.69%	4.60	35.63	1	0.00%	0.3	0	0.00%	0.0
Brewmaster	1	1.69%	3.45	24.14	0	0.00%	0.0	1	0.00%	0.1
Crystal Maiden	1	1.69%	2.30	35.63	1	0.00%	0.3	0	0.00%	0.0
Lich	1	1.69%	2.30	35.63	1	0.00%	0.3	0	0.00%	0.0