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): 6 - Median hero bans (mb): 10 - Matches: 88

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

Balance rank	Winrate	Pickrate	Contest Rate
59.8	86.8	35.5	27.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Spirit Breaker	83	94.32%	100.00	76.34	19	63.16%	3.2	64	56.25%	6.4
Io	78	88.64%	98.92	77.42	17	70.59%	2.8	61	50.82%	6.1
Troll Warlord	23	26.14%	97.85	24.73	11	81.82%	1.8	12	58.33%	1.2
Kunkka	41	46.59%	96.77	51.61	20	60.00%	3.3	21	61.90%	2.1
Tidehunter	50	56.82%	95.70	65.59	30	60.00%	5.0	20	50.00%	2.0
Dark Seer	22	25.00%	94.62	27.96	5	80.00%	0.8	17	64.71%	1.7
Storm Spirit	56	63.64%	93.55	72.04	21	47.62%	3.5	35	62.86%	3.5
Wraith King	55	62.50%	92.47	70.97	27	59.26%	4.5	28	46.43%	2.8
Pangolier	53	60.23%	91.40	69.89	25	60.00%	4.2	28	46.43%	2.8
Grimstroke	45	51.14%	90.32	66.67	25	56.00%	4.2	20	55.00%	2.0
Templar Assassin	63	71.59%	89.25	87.10	22	54.55%	3.7	41	48.78%	4.1
Queen of Pain	82	93.18%	88.17	93.55	29	44.83%	4.8	53	50.94%	5.3
Snapfire	35	39.77%	87.10	56.99	31	54.84%	5.2	4	100.00%	0.4
Medusa	26	29.55%	86.02	41.94	9	55.56%	1.5	17	70.59%	1.7
Bane	71	80.68%	84.95	92.47	46	45.65%	7.7	25	56.00%	2.5
Weaver	60	68.18%	83.87	88.17	29	48.28%	4.8	31	51.61%	3.1
Disruptor	20	22.73%	82.80	38.71	13	69.23%	2.2	7	42.86%	0.7
Puck	34	38.64%	81.72	55.91	7	57.14%	1.2	27	55.56%	2.7
Terrorblade	35	39.77%	80.65	60.22	9	44.44%	1.5	26	61.54%	2.6
Bloodseeker	34	38.64%	79.57	59.14	10	50.00%	1.7	24	58.33%	2.4
Phantom Lancer	13	14.77%	78.49	15.05	2	100.00%	0.3	11	63.64%	1.1
Razor	49	55.68%	77.42	82.80	14	42.86%	2.3	35	54.29%	3.5
Lina	49	55.68%	76.34	84.95	16	56.25%	2.7	33	42.42%	3.3
Morphling	57	64.77%	75.27	90.32	18	50.00%	3.0	39	43.59%	3.9
Lycan	31	35.23%	74.19	58.06	10	60.00%	1.7	21	47.62%	2.1
Nyx Assassin	25	28.41%	73.12	49.46	9	55.56%	1.5	16	56.25%	1.6
Death Prophet	59	67.05%	72.04	95.70	37	35.14%	6.2	22	68.18%	2.2
Tusk	34	38.64%	70.97	73.12	21	47.62%	3.5	13	53.85%	1.3
Night Stalker	40	45.45%	69.89	81.72	11	54.55%	1.8	29	41.38%	2.9
Ember Spirit	39	44.32%	68.82	83.87	17	41.18%	2.8	22	54.55%	2.2
Mars	59	67.05%	67.74	97.85	30	40.00%	5.0	29	44.83%	2.9
Broodmother	49	55.68%	66.67	91.40	10	70.00%	1.7	39	30.77%	3.9
Monkey King	61	69.32%	65.59	98.92	21	33.33%	3.5	40	47.50%	4.0
Brewmaster	11	12.50%	64.52	22.58	4	75.00%	0.7	7	57.14%	0.7
Rubick	25	28.41%	63.44	64.52	15	53.33%	2.5	10	40.00%	1.0
Beastmaster	34	38.64%	62.37	75.27	4	100.00%	0.7	30	33.33%	3.0
Leshrac	12	13.64%	61.29	32.26	6	66.67%	1.0	6	50.00%	0.6
Lion	18	20.45%	60.22	50.54	15	53.33%	2.5	3	33.33%	0.3
Batrider	18	20.45%	59.14	44.09	2	0.00%	0.3	16	68.75%	1.6
Invoker	10	11.36%	58.06	23.66	4	50.00%	0.7	6	83.33%	0.6
Void Spirit	28	31.82%	56.99	79.57	17	41.18%	2.8	11	54.55%	1.1
Phantom Assassin	19	21.59%	55.91	53.76	11	54.55%	1.8	8	37.50%	0.8
Shadow Demon	15	17.05%	54.84	40.86	5	40.00%	0.8	10	70.00%	1.0
Tinker	10	11.36%	53.76	29.03	5	80.00%	0.8	5	20.00%	0.5
Outworld Destroyer	51	57.95%	52.69	100.00	5	20.00%	0.8	46	39.13%	4.6
Luna	20	22.73%	51.61	62.37	8	50.00%	1.3	12	41.67%	1.2
Clockwerk	6	6.82%	50.54	9.68	4	75.00%	0.7	2	50.00%	0.2
Abaddon	5	5.68%	49.46	8.60	3	66.67%	0.5	2	100.00%	0.2
Viper	10	11.36%	48.39	31.18	4	50.00%	0.7	6	66.67%	0.6
Mirana	17	19.32%	47.31	63.44	12	41.67%	2.0	5	60.00%	0.5
Tiny	6	6.82%	46.24	10.75	3	66.67%	0.5	3	66.67%	0.3
Ursa	11	12.50%	45.16	34.41	2	100.00%	0.3	9	33.33%	0.9
Faceless Void	12	13.64%	44.09	43.01	4	25.00%	0.7	8	75.00%	0.8
Dark Willow	18	20.45%	43.01	74.19	12	41.67%	2.0	6	33.33%	0.6
Legion Commander	21	23.86%	41.94	80.65	8	37.50%	1.3	13	38.46%	1.3
Anti-Mage	13	14.77%	40.86	46.24	2	50.00%	0.3	11	45.45%	1.1
Ancient Apparition	17	19.32%	39.78	68.82	6	33.33%	1.0	11	45.45%	1.1
Oracle	3	3.41%	38.71	5.38	2	100.00%	0.3	1	0.00%	0.1
Undying	8	9.09%	37.63	35.48	6	50.00%	1.0	2	50.00%	0.2
Drow Ranger	19	21.59%	36.56	78.49	5	40.00%	0.8	14	35.71%	1.4
Dragon Knight	5	5.68%	35.48	11.83	3	66.67%	0.5	2	50.00%	0.2
Skywrath Mage	2	2.27%	34.41	1.08	1	100.00%	0.2	1	100.00%	0.1
Jakiro	8	9.09%	33.33	45.16	6	50.00%	1.0	2	0.00%	0.2
Naga Siren	7	7.95%	32.26	25.81	1	0.00%	0.2	6	66.67%	0.6
Silencer	10	11.36%	31.18	61.29	7	42.86%	1.2	3	0.00%	0.3
Phoenix	5	5.68%	30.11	33.33	4	50.00%	0.7	1	0.00%	0.1
Clinkz	1	1.14%	29.03	3.23	1	100.00%	0.2	0	0.00%	0.0
Centaur Warrunner	1	1.14%	29.03	3.23	1	100.00%	0.2	0	0.00%	0.0
Gyrocopter	6	6.82%	26.88	39.78	4	50.00%	0.7	2	0.00%	0.2
Treant Protector	4	4.55%	25.81	16.13	2	50.00%	0.3	2	50.00%	0.2
Windranger	5	5.68%	24.73	37.63	5	40.00%	0.8	0	0.00%	0.0
Riki	3	3.41%	23.66	7.53	0	0.00%	0.0	3	66.67%	0.3
Visage	5	5.68%	22.58	30.11	2	50.00%	0.3	3	33.33%	0.3
Magnus	2	2.27%	21.51	6.45	1	100.00%	0.2	1	0.00%	0.1
Ogre Magi	13	14.77%	20.43	96.77	11	18.18%	1.8	2	50.00%	0.2
Lifestealer	16	18.18%	19.35	94.62	3	0.00%	0.5	13	30.77%	1.3
Slardar	1	1.14%	18.28	4.30	0	0.00%	0.0	1	100.00%	0.1
Shadow Fiend	3	3.41%	17.20	21.51	2	50.00%	0.3	1	0.00%	0.1
Venomancer	3	3.41%	17.20	21.51	2	50.00%	0.3	1	0.00%	0.1
Earthshaker	5	5.68%	15.05	48.39	3	33.33%	0.5	2	0.00%	0.2
Enchantress	5	5.68%	15.05	48.39	3	33.33%	0.5	2	0.00%	0.2
Earth Spirit	5	5.68%	12.90	52.69	4	25.00%	0.7	1	0.00%	0.1
Bristleback	2	2.27%	11.83	13.98	1	0.00%	0.2	1	100.00%	0.1
Chaos Knight	2	2.27%	11.83	13.98	1	0.00%	0.2	1	100.00%	0.1
Juggernaut	3	3.41%	9.68	26.88	1	0.00%	0.2	2	50.00%	0.2
Spectre	3	3.41%	8.60	36.56	2	0.00%	0.3	1	100.00%	0.1
Dawnbreaker	3	3.41%	7.53	54.84	2	0.00%	0.3	1	0.00%	0.1
Winter Wyvern	4	4.55%	6.45	86.02	4	0.00%	0.7	0	0.00%	0.0
Timbersaw	4	4.55%	5.38	67.74	2	0.00%	0.3	2	0.00%	0.2
Doom	5	5.68%	4.30	89.25	3	0.00%	0.5	2	0.00%	0.2
Underlord	1	1.14%	3.23	19.35	1	0.00%	0.2	0	0.00%	0.0
Elder Titan	1	1.14%	3.23	19.35	1	0.00%	0.2	0	0.00%	0.0
Hoodwink	1	1.14%	3.23	19.35	1	0.00%	0.2	0	0.00%	0.0