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: 87

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

Balance rank	Winrate	Pickrate	Contest Rate
52.6	71.0	37.2	28.1

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Kunkka	69	79.31%	100.00	60.61	27	70.37%	3.9	42	52.38%	4.2
Lion	44	50.57%	98.99	51.52	28	67.86%	4.0	16	56.25%	1.6
Terrorblade	42	48.28%	97.98	49.49	9	55.56%	1.3	33	69.70%	3.3
Batrider	25	28.74%	96.97	34.34	8	87.50%	1.1	17	58.82%	1.7
Medusa	51	58.62%	95.96	57.58	13	61.54%	1.9	38	60.53%	3.8
Bane	72	82.76%	94.95	79.80	32	62.50%	4.6	40	45.00%	4.0
Pangolier	39	44.83%	93.94	52.53	19	68.42%	2.7	20	55.00%	2.0
Death Prophet	41	47.13%	92.93	55.56	20	60.00%	2.9	21	66.67%	2.1
Mirana	35	40.23%	91.92	44.44	16	68.75%	2.3	19	57.89%	1.9
Enchantress	38	43.68%	90.91	54.55	9	66.67%	1.3	29	58.62%	2.9
Weaver	80	91.95%	89.90	93.94	32	53.13%	4.6	48	45.83%	4.8
Outworld Destroyer	57	65.52%	88.89	75.76	13	61.54%	1.9	44	50.00%	4.4
Wraith King	58	66.67%	87.88	78.79	26	57.69%	3.7	32	46.88%	3.2
Razor	48	55.17%	86.87	70.71	15	66.67%	2.1	33	45.45%	3.3
Brewmaster	15	17.24%	85.86	23.23	7	85.71%	1.0	8	50.00%	0.8
Io	42	48.28%	84.85	61.62	13	61.54%	1.9	29	51.72%	2.9
Lina	63	72.41%	83.84	88.89	22	45.45%	3.1	41	56.10%	4.1
Beastmaster	42	48.28%	82.83	64.65	19	63.16%	2.7	23	43.48%	2.3
Faceless Void	17	19.54%	81.82	33.33	6	50.00%	0.9	11	90.91%	1.1
Bloodseeker	11	12.64%	80.81	10.10	3	66.67%	0.4	8	87.50%	0.8
Queen of Pain	60	68.97%	79.80	90.91	35	54.29%	5.0	25	32.00%	2.5
Tidehunter	49	56.32%	78.79	82.83	25	56.00%	3.6	24	37.50%	2.4
Templar Assassin	43	49.43%	77.78	73.74	17	58.82%	2.4	26	42.31%	2.6
Phantom Assassin	33	37.93%	76.77	59.60	15	46.67%	2.1	18	66.67%	1.8
Luna	36	41.38%	75.76	68.69	17	52.94%	2.4	19	52.63%	1.9
Grimstroke	33	37.93%	74.75	63.64	18	38.89%	2.6	15	86.67%	1.5
Ember Spirit	45	51.72%	73.74	87.88	24	54.17%	3.4	21	33.33%	2.1
Monkey King	61	70.11%	72.73	96.97	8	50.00%	1.1	53	41.51%	5.3
Mars	76	87.36%	71.72	98.99	37	40.54%	5.3	39	38.46%	3.9
Shadow Demon	19	21.84%	70.71	47.47	8	62.50%	1.1	11	45.45%	1.1
Morphling	49	56.32%	69.70	95.96	16	43.75%	2.3	33	39.39%	3.3
Dark Willow	10	11.49%	68.69	31.31	7	71.43%	1.0	3	33.33%	0.3
Puck	40	45.98%	67.68	91.92	12	41.67%	1.7	28	42.86%	2.8
Doom	27	31.03%	66.67	71.72	9	44.44%	1.3	18	50.00%	1.8
Phantom Lancer	25	28.74%	65.66	62.63	4	25.00%	0.6	21	57.14%	2.1
Disruptor	25	28.74%	64.65	72.73	15	40.00%	2.1	10	60.00%	1.0
Earthshaker	13	14.94%	63.64	41.41	9	66.67%	1.3	4	0.00%	0.4
Leshrac	13	14.94%	62.63	40.40	7	57.14%	1.0	6	50.00%	0.6
Lifestealer	29	33.33%	61.62	81.82	11	27.27%	1.6	18	61.11%	1.8
Rubick	19	21.84%	60.61	65.66	14	42.86%	2.0	5	60.00%	0.5
Snapfire	31	35.63%	59.60	92.93	24	33.33%	3.4	7	71.43%	0.7
Legion Commander	20	22.99%	58.59	66.67	7	42.86%	1.0	13	46.15%	1.3
Void Spirit	17	19.54%	57.58	58.59	7	42.86%	1.0	10	50.00%	1.0
Night Stalker	14	16.09%	56.57	45.45	4	50.00%	0.6	10	50.00%	1.0
Invoker	39	44.83%	55.56	97.98	6	16.67%	0.9	33	39.39%	3.3
Windranger	5	5.75%	54.55	16.16	4	75.00%	0.6	1	0.00%	0.1
Dragon Knight	7	8.05%	53.54	30.30	5	60.00%	0.7	2	50.00%	0.2
Ogre Magi	19	21.84%	52.53	80.81	17	35.29%	2.4	2	100.00%	0.2
Drow Ranger	12	13.79%	51.52	50.51	7	42.86%	1.0	5	60.00%	0.5
Dark Seer	17	19.54%	50.51	67.68	7	28.57%	1.0	10	60.00%	1.0
Slark	4	4.60%	49.49	7.07	1	100.00%	0.1	3	66.67%	0.3
Spirit Breaker	42	48.28%	48.48	100.00	18	16.67%	2.6	24	45.83%	2.4
Magnus	6	6.90%	47.47	18.18	2	50.00%	0.3	4	75.00%	0.4
Treant Protector	15	17.24%	46.46	74.75	12	33.33%	1.7	3	66.67%	0.3
Storm Spirit	19	21.84%	45.45	85.86	7	28.57%	1.0	12	41.67%	1.2
Clockwerk	9	10.34%	44.44	48.48	7	42.86%	1.0	2	50.00%	0.2
Tiny	5	5.75%	43.43	28.28	4	50.00%	0.6	1	100.00%	0.1
Abaddon	9	10.34%	42.42	46.46	5	40.00%	0.7	4	50.00%	0.4
Jakiro	3	3.45%	41.41	9.09	3	66.67%	0.4	0	0.00%	0.0
Undying	5	5.75%	40.40	22.22	2	50.00%	0.3	3	66.67%	0.3
Tusk	10	11.49%	39.39	56.57	5	20.00%	0.7	5	80.00%	0.5
Viper	16	18.39%	38.38	84.85	6	16.67%	0.9	10	50.00%	1.0
Crystal Maiden	4	4.60%	37.37	21.21	3	66.67%	0.4	1	0.00%	0.1
Spectre	2	2.30%	36.36	2.02	0	0.00%	0.0	2	100.00%	0.2
Earth Spirit	1	1.15%	35.35	6.06	1	100.00%	0.1	0	0.00%	0.0
Chaos Knight	1	1.15%	35.35	6.06	1	100.00%	0.1	0	0.00%	0.0
Vengeful Spirit	1	1.15%	35.35	6.06	1	100.00%	0.1	0	0.00%	0.0
Riki	1	1.15%	35.35	6.06	1	100.00%	0.1	0	0.00%	0.0
Naga Siren	9	10.34%	31.31	53.54	2	0.00%	0.3	7	57.14%	0.7
Anti-Mage	13	14.94%	30.30	77.78	4	25.00%	0.6	9	33.33%	0.9
Broodmother	13	14.94%	29.29	83.84	5	20.00%	0.7	8	37.50%	0.8
Timbersaw	15	17.24%	28.28	89.90	4	25.00%	0.6	11	27.27%	1.1
Nyx Assassin	12	13.79%	27.27	86.87	7	14.29%	1.0	5	60.00%	0.5
Dawnbreaker	11	12.64%	26.26	76.77	4	0.00%	0.6	7	57.14%	0.7
Bristleback	3	3.45%	25.25	17.17	1	100.00%	0.1	2	0.00%	0.2
Lich	2	2.30%	24.24	15.15	2	50.00%	0.3	0	0.00%	0.0
Zeus	1	1.15%	23.23	1.01	0	0.00%	0.0	1	100.00%	0.1
Centaur Warrunner	8	9.20%	22.22	69.70	4	25.00%	0.6	4	25.00%	0.4
Tinker	3	3.45%	21.21	29.29	2	50.00%	0.3	1	0.00%	0.1
Ursa	6	6.90%	20.20	43.43	1	100.00%	0.1	5	0.00%	0.5
Winter Wyvern	3	3.45%	19.19	37.37	3	33.33%	0.4	0	0.00%	0.0
Troll Warlord	3	3.45%	19.19	37.37	3	33.33%	0.4	0	0.00%	0.0
Slardar	2	2.30%	17.17	8.08	0	0.00%	0.0	2	50.00%	0.2
Ancient Apparition	2	2.30%	16.16	20.20	1	0.00%	0.1	1	100.00%	0.1
Nature's Prophet	2	2.30%	16.16	20.20	1	0.00%	0.1	1	100.00%	0.1
Shadow Fiend	3	3.45%	14.14	35.35	1	0.00%	0.1	2	50.00%	0.2
Venomancer	2	2.30%	13.13	39.39	1	0.00%	0.1	1	0.00%	0.1
Bounty Hunter	2	2.30%	13.13	39.39	1	0.00%	0.1	1	0.00%	0.1
Elder Titan	2	2.30%	11.11	42.42	2	0.00%	0.3	0	0.00%	0.0
Enigma	1	1.15%	10.10	14.14	0	0.00%	0.0	1	0.00%	0.1
Sven	1	1.15%	10.10	14.14	0	0.00%	0.0	1	0.00%	0.1
Sand King	1	1.15%	10.10	14.14	0	0.00%	0.0	1	0.00%	0.1
Hoodwink	1	1.15%	7.07	27.27	1	0.00%	0.1	0	0.00%	0.0
Lycan	2	2.30%	6.06	32.32	0	0.00%	0.0	2	0.00%	0.2
Skywrath Mage	1	1.15%	5.05	27.27	1	0.00%	0.1	0	0.00%	0.0
Underlord	1	1.15%	5.05	27.27	1	0.00%	0.1	0	0.00%	0.0
Gyrocopter	5	5.75%	3.03	94.95	5	0.00%	0.7	0	0.00%	0.0
Dazzle	1	1.15%	2.02	27.27	1	0.00%	0.1	0	0.00%	0.0
Arc Warden	1	1.15%	1.01	14.14	0	0.00%	0.0	1	0.00%	0.1