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): 7 - Median hero bans (mb): 10 - Matches: 85

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

Balance rank	Winrate	Pickrate	Contest Rate
65.8	88.3	45.5	38.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Luna	57	67.06%	100.00	52.53	23	69.57%	3.3	34	61.76%	3.4
Timbersaw	49	57.65%	98.99	51.52	13	53.85%	1.9	36	72.22%	3.6
Puck	43	50.59%	97.98	44.44	14	71.43%	2.0	29	62.07%	2.9
Weaver	80	94.12%	96.97	81.82	20	65.00%	2.9	60	48.33%	6.0
Bane	78	91.76%	95.96	83.84	45	57.78%	6.4	33	45.45%	3.3
Queen of Pain	66	77.65%	94.95	75.76	27	55.56%	3.9	39	56.41%	3.9
Troll Warlord	13	15.29%	93.94	9.09	4	75.00%	0.6	9	88.89%	0.9
Medusa	53	62.35%	92.93	66.67	11	45.45%	1.6	42	61.90%	4.2
Brewmaster	19	22.35%	91.92	21.21	3	33.33%	0.4	16	87.50%	1.6
Dark Seer	21	24.71%	90.91	30.30	8	62.50%	1.1	13	76.92%	1.3
Outworld Destroyer	51	60.00%	89.90	71.72	16	62.50%	2.3	35	45.71%	3.5
Beastmaster	50	58.82%	88.89	72.73	7	85.71%	1.0	43	41.86%	4.3
Viper	25	29.41%	87.88	40.40	9	77.78%	1.3	16	43.75%	1.6
Shadow Shaman	4	4.71%	86.87	3.03	4	100.00%	0.6	0	0.00%	0.0
Storm Spirit	33	38.82%	85.86	60.61	18	55.56%	2.6	15	53.33%	1.5
Tidehunter	40	47.06%	84.85	69.70	18	55.56%	2.6	22	45.45%	2.2
Invoker	50	58.82%	83.84	86.87	12	50.00%	1.7	38	47.37%	3.8
Spirit Breaker	56	65.88%	82.83	93.94	26	38.46%	3.7	30	60.00%	3.0
Treant Protector	13	15.29%	81.82	26.26	11	72.73%	1.6	2	0.00%	0.2
Snapfire	57	67.06%	80.81	95.96	36	47.22%	5.1	21	42.86%	2.1
Io	57	67.06%	79.80	96.97	26	50.00%	3.7	31	38.71%	3.1
Terrorblade	34	40.00%	78.79	64.65	14	57.14%	2.0	20	45.00%	2.0
Wraith King	41	48.24%	77.78	79.80	18	50.00%	2.6	23	47.83%	2.3
Tusk	23	27.06%	76.77	49.49	12	75.00%	1.7	11	18.18%	1.1
Faceless Void	24	28.24%	75.76	47.47	4	50.00%	0.6	20	60.00%	2.0
Morphling	37	43.53%	74.75	73.74	14	57.14%	2.0	23	39.13%	2.3
Templar Assassin	43	50.59%	73.74	88.89	17	52.94%	2.4	26	38.46%	2.6
Shadow Demon	17	20.00%	72.73	39.39	12	66.67%	1.7	5	20.00%	0.5
Mars	62	72.94%	71.72	100.00	19	42.11%	2.7	43	41.86%	4.3
Death Prophet	16	18.82%	70.71	37.37	9	55.56%	1.3	7	71.43%	0.7
Slardar	7	8.24%	69.70	7.07	3	66.67%	0.4	4	100.00%	0.4
Leshrac	22	25.88%	68.69	50.51	7	57.14%	1.0	15	53.33%	1.5
Broodmother	21	24.71%	67.68	48.48	6	33.33%	0.9	15	73.33%	1.5
Kunkka	40	47.06%	66.67	87.88	19	47.37%	2.7	21	42.86%	2.1
Razor	29	34.12%	65.66	62.63	7	28.57%	1.0	22	63.64%	2.2
Gyrocopter	25	29.41%	64.65	59.60	12	58.33%	1.7	13	38.46%	1.3
Ember Spirit	38	44.71%	63.64	82.83	19	52.63%	2.7	19	31.58%	1.9
Legion Commander	42	49.41%	62.63	91.92	12	41.67%	1.7	30	46.67%	3.0
Void Spirit	18	21.18%	61.62	45.45	11	45.45%	1.6	7	85.71%	0.7
Ogre Magi	34	40.00%	60.61	80.81	25	52.00%	3.6	9	11.11%	0.9
Mirana	19	22.35%	59.60	54.55	13	61.54%	1.9	6	16.67%	0.6
Magnus	14	16.47%	58.59	34.34	5	40.00%	0.7	9	77.78%	0.9
Nyx Assassin	24	28.24%	57.58	67.68	11	36.36%	1.6	13	61.54%	1.3
Monkey King	35	41.18%	56.57	92.93	7	42.86%	1.0	28	39.29%	2.8
Lycan	13	15.29%	55.56	33.33	3	66.67%	0.4	10	50.00%	1.0
Ursa	28	32.94%	54.55	74.75	2	0.00%	0.3	26	50.00%	2.6
Venomancer	15	17.65%	53.54	41.41	4	75.00%	0.6	11	36.36%	1.1
Disruptor	23	27.06%	52.53	77.78	17	41.18%	2.4	6	50.00%	0.6
Night Stalker	18	21.18%	51.52	57.58	5	40.00%	0.7	13	53.85%	1.3
Earth Spirit	8	9.41%	50.51	23.23	5	60.00%	0.7	3	66.67%	0.3
Chaos Knight	8	9.41%	49.49	17.17	3	33.33%	0.4	5	100.00%	0.5
Batrider	23	27.06%	48.48	68.69	5	40.00%	0.7	18	44.44%	1.8
Phantom Lancer	17	20.00%	47.47	55.56	4	50.00%	0.6	13	46.15%	1.3
Drow Ranger	20	23.53%	46.46	63.64	5	40.00%	0.7	15	46.67%	1.5
Lion	11	12.94%	45.45	53.54	11	45.45%	1.6	0	0.00%	0.0
Abaddon	4	4.71%	44.44	5.05	1	100.00%	0.1	3	66.67%	0.3
Phantom Assassin	23	27.06%	43.43	90.91	10	30.00%	1.4	13	46.15%	1.3
Clockwerk	9	10.59%	42.42	36.36	5	60.00%	0.7	4	25.00%	0.4
Centaur Warrunner	6	7.06%	41.41	15.15	2	100.00%	0.3	4	25.00%	0.4
Sven	15	17.65%	40.40	65.66	6	33.33%	0.9	9	44.44%	0.9
Naga Siren	10	11.76%	39.39	46.46	4	50.00%	0.6	6	33.33%	0.6
Doom	15	17.65%	38.38	76.77	8	25.00%	1.1	7	57.14%	0.7
Anti-Mage	6	7.06%	37.37	16.16	1	100.00%	0.1	5	40.00%	0.5
Witch Doctor	3	3.53%	36.36	8.08	3	66.67%	0.4	0	0.00%	0.0
Rubick	13	15.29%	35.35	70.71	10	40.00%	1.4	3	0.00%	0.3
Bloodseeker	9	10.59%	34.34	42.42	3	66.67%	0.4	6	16.67%	0.6
Shadow Fiend	4	4.71%	33.33	22.22	4	50.00%	0.6	0	0.00%	0.0
Undying	6	7.06%	32.32	31.31	3	66.67%	0.4	3	0.00%	0.3
Silencer	3	3.53%	31.31	10.10	2	50.00%	0.3	1	100.00%	0.1
Jakiro	8	9.41%	30.30	56.57	6	33.33%	0.9	2	50.00%	0.2
Pangolier	14	16.47%	29.29	94.95	12	25.00%	1.7	2	50.00%	0.2
Tiny	1	1.18%	28.28	4.04	1	100.00%	0.1	0	0.00%	0.0
Enchantress	6	7.06%	27.27	38.38	4	25.00%	0.6	2	100.00%	0.2
Dark Willow	11	12.94%	26.26	84.85	11	27.27%	1.6	0	0.00%	0.0
Hoodwink	6	7.06%	25.25	43.43	5	40.00%	0.7	1	0.00%	0.1
Necrophos	5	5.88%	24.24	28.28	2	50.00%	0.3	3	33.33%	0.3
Juggernaut	4	4.71%	23.23	25.25	3	33.33%	0.4	1	100.00%	0.1
Elder Titan	2	2.35%	22.22	6.06	1	100.00%	0.1	1	0.00%	0.1
Grimstroke	13	15.29%	21.21	98.99	11	18.18%	1.6	2	50.00%	0.2
Nature's Prophet	9	10.59%	20.20	78.79	7	14.29%	1.0	2	100.00%	0.2
Riki	2	2.35%	19.19	14.14	2	50.00%	0.3	0	0.00%	0.0
Chen	2	2.35%	19.19	14.14	2	50.00%	0.3	0	0.00%	0.0
Slark	2	2.35%	19.19	14.14	2	50.00%	0.3	0	0.00%	0.0
Sniper	1	1.18%	16.16	2.02	0	0.00%	0.0	1	100.00%	0.1
Enigma	1	1.18%	16.16	2.02	0	0.00%	0.0	1	100.00%	0.1
Lina	11	12.94%	14.14	85.86	3	0.00%	0.4	8	37.50%	0.8
Pugna	3	3.53%	13.13	29.29	3	33.33%	0.4	0	0.00%	0.0
Dawnbreaker	8	9.41%	12.12	97.98	7	14.29%	1.0	1	0.00%	0.1
Axe	3	3.53%	11.11	27.27	1	0.00%	0.1	2	50.00%	0.2
Dragon Knight	3	3.53%	10.10	35.35	2	0.00%	0.3	1	100.00%	0.1
Sand King	7	8.24%	9.09	89.90	3	0.00%	0.4	4	25.00%	0.4
Lifestealer	2	2.35%	8.08	24.24	0	0.00%	0.0	2	0.00%	0.2
Tinker	2	2.35%	7.07	32.32	1	0.00%	0.1	1	0.00%	0.1
Underlord	3	3.53%	6.06	58.59	2	0.00%	0.3	1	0.00%	0.1
Oracle	1	1.18%	5.05	20.20	1	0.00%	0.1	0	0.00%	0.0
Winter Wyvern	3	3.53%	4.04	61.62	3	0.00%	0.4	0	0.00%	0.0
Bristleback	1	1.18%	3.03	20.20	1	0.00%	0.1	0	0.00%	0.0
Lone Druid	1	1.18%	3.03	20.20	1	0.00%	0.1	0	0.00%	0.0
Skywrath Mage	1	1.18%	1.01	14.14	0	0.00%	0.0	1	0.00%	0.1