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): 5 - Median hero bans (mb): 7 - Matches: 72

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

Balance rank	Winrate	Pickrate	Contest Rate
63.3	79.1	49.2	44.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Lycan	26	36.11%	100.00	41.12	8	50.00%	1.6	18	88.89%	2.6
Viper	58	80.56%	99.07	77.57	14	42.86%	2.8	44	65.91%	6.3
Batrider	38	52.78%	98.13	55.14	4	50.00%	0.8	34	64.71%	4.9
Puck	56	77.78%	97.20	82.24	14	64.29%	2.8	42	50.00%	6.0
Tiny	50	69.44%	96.26	79.44	32	53.13%	6.4	18	61.11%	2.6
Brewmaster	14	19.44%	95.33	25.23	6	83.33%	1.2	8	62.50%	1.1
Weaver	21	29.17%	94.39	44.86	8	62.50%	1.6	13	69.23%	1.9
Kunkka	23	31.94%	93.46	46.73	5	40.00%	1.0	18	77.78%	2.6
Monkey King	46	63.89%	92.52	80.37	21	66.67%	4.2	25	32.00%	3.6
Winter Wyvern	32	44.44%	91.59	60.75	16	62.50%	3.2	16	50.00%	2.3
Faceless Void	17	23.61%	90.65	37.38	5	80.00%	1.0	12	58.33%	1.7
Enigma	43	59.72%	89.72	81.31	18	55.56%	3.6	25	48.00%	3.6
Keeper of the Light	56	77.78%	88.79	96.26	12	75.00%	2.4	44	34.09%	6.3
Marci	58	80.56%	87.85	98.13	26	53.85%	5.2	32	37.50%	4.6
Enchantress	26	36.11%	86.92	57.01	12	58.33%	2.4	14	57.14%	2.0
Beastmaster	54	75.00%	85.98	95.33	19	52.63%	3.8	35	42.86%	5.0
Juggernaut	45	62.50%	85.05	88.79	16	56.25%	3.2	29	41.38%	4.1
Pangolier	36	50.00%	84.11	72.90	8	50.00%	1.6	28	53.57%	4.0
Lina	17	23.61%	83.18	43.93	5	80.00%	1.0	12	50.00%	1.7
Doom	8	11.11%	82.24	15.89	5	80.00%	1.0	3	66.67%	0.4
Visage	40	55.56%	81.31	85.05	14	35.71%	2.8	26	61.54%	3.7
Medusa	33	45.83%	80.37	71.96	6	50.00%	1.2	27	51.85%	3.9
Zeus	39	54.17%	79.44	86.92	24	41.67%	4.8	15	66.67%	2.1
Snapfire	25	34.72%	78.50	66.36	20	60.00%	4.0	5	0.00%	0.7
Skywrath Mage	21	29.17%	77.57	61.68	15	53.33%	3.0	6	50.00%	0.9
Timbersaw	25	34.72%	76.64	67.29	8	50.00%	1.6	17	52.94%	2.4
Necrophos	22	30.56%	75.70	58.88	6	50.00%	1.2	16	56.25%	2.3
Phantom Lancer	9	12.50%	74.77	22.43	2	100.00%	0.4	7	57.14%	1.0
Io	32	44.44%	73.83	84.11	13	53.85%	2.6	19	36.84%	2.7
Dragon Knight	37	51.39%	72.90	91.59	17	47.06%	3.4	20	40.00%	2.9
Void Spirit	23	31.94%	71.96	68.22	13	46.15%	2.6	10	60.00%	1.4
Bloodseeker	36	50.00%	71.03	90.65	9	44.44%	1.8	27	44.44%	3.9
Dazzle	5	6.94%	70.09	7.48	2	100.00%	0.4	3	66.67%	0.4
Chen	14	19.44%	69.16	50.47	9	66.67%	1.8	5	20.00%	0.7
Pudge	6	8.33%	68.22	12.15	3	100.00%	0.6	3	33.33%	0.4
Dawnbreaker	33	45.83%	67.29	92.52	23	39.13%	4.6	10	60.00%	1.4
Terrorblade	25	34.72%	66.36	75.70	9	66.67%	1.8	16	25.00%	2.3
Invoker	20	27.78%	65.42	62.62	6	33.33%	1.2	14	64.29%	2.0
Alchemist	25	34.72%	64.49	73.83	7	71.43%	1.4	18	27.78%	2.6
Razor	31	43.06%	63.55	89.72	14	21.43%	2.8	17	76.47%	2.4
Clockwerk	18	25.00%	62.62	65.42	13	46.15%	2.6	5	60.00%	0.7
Crystal Maiden	22	30.56%	61.68	78.50	18	44.44%	3.6	4	50.00%	0.6
Bristleback	28	38.89%	60.75	87.85	12	41.67%	2.4	16	43.75%	2.3
Slardar	6	8.33%	59.81	21.50	4	75.00%	0.8	2	50.00%	0.3
Jakiro	6	8.33%	59.81	21.50	4	75.00%	0.8	2	50.00%	0.3
Mars	25	34.72%	57.94	83.18	8	37.50%	1.6	17	47.06%	2.4
Night Stalker	16	22.22%	57.01	54.21	4	50.00%	0.8	12	50.00%	1.7
Templar Assassin	17	23.61%	56.07	64.49	7	28.57%	1.4	10	70.00%	1.4
Shadow Shaman	4	5.56%	55.14	11.21	4	75.00%	0.8	0	0.00%	0.0
Witch Doctor	9	12.50%	54.21	40.19	5	60.00%	1.0	4	50.00%	0.6
Ember Spirit	30	41.67%	53.27	97.20	7	28.57%	1.4	23	43.48%	3.3
Mirana	17	23.61%	52.34	71.03	13	38.46%	2.6	4	75.00%	0.6
Windranger	12	16.67%	51.40	56.07	11	45.45%	2.2	1	100.00%	0.1
Earth Spirit	2	2.78%	50.47	0.93	2	100.00%	0.4	0	0.00%	0.0
Chaos Knight	36	50.00%	49.53	100.00	8	25.00%	1.6	28	39.29%	4.0
Ancient Apparition	5	6.94%	48.60	9.35	0	0.00%	0.0	5	80.00%	0.7
Grimstroke	11	15.28%	47.66	51.40	5	60.00%	1.0	6	33.33%	0.9
Tusk	17	23.61%	46.73	76.64	10	40.00%	2.0	7	42.86%	1.0
Lone Druid	9	12.50%	45.79	38.32	2	50.00%	0.4	7	57.14%	1.0
Nyx Assassin	3	4.17%	44.86	8.41	2	100.00%	0.4	1	0.00%	0.1
Hoodwink	11	15.28%	43.93	57.94	7	42.86%	1.4	4	50.00%	0.6
Magnus	5	6.94%	42.99	23.36	3	66.67%	0.6	2	50.00%	0.3
Anti-Mage	8	11.11%	42.06	34.58	1	100.00%	0.2	7	42.86%	1.0
Nature's Prophet	9	12.50%	41.12	45.79	3	66.67%	0.6	6	33.33%	0.9
Spectre	2	2.78%	40.19	5.61	1	100.00%	0.2	1	100.00%	0.1
Underlord	6	8.33%	39.25	35.51	5	60.00%	1.0	1	0.00%	0.1
Queen of Pain	5	6.94%	38.32	14.95	1	100.00%	0.2	4	50.00%	0.6
Drow Ranger	4	5.56%	37.38	14.02	2	50.00%	0.4	2	100.00%	0.3
Luna	3	4.17%	36.45	13.08	3	66.67%	0.6	0	0.00%	0.0
Dark Seer	4	5.56%	35.51	24.30	3	66.67%	0.6	1	0.00%	0.1
Bane	10	13.89%	34.58	63.55	6	33.33%	1.2	4	50.00%	0.6
Rubick	10	13.89%	33.64	69.16	7	28.57%	1.4	3	66.67%	0.4
Pugna	16	22.22%	32.71	94.39	8	12.50%	1.6	8	62.50%	1.1
Sand King	5	6.94%	31.78	42.06	4	50.00%	0.8	1	0.00%	0.1
Omniknight	1	1.39%	30.84	4.67	1	100.00%	0.2	0	0.00%	0.0
Slark	1	1.39%	30.84	4.67	1	100.00%	0.2	0	0.00%	0.0
Lion	1	1.39%	30.84	4.67	1	100.00%	0.2	0	0.00%	0.0
Clinkz	1	1.39%	30.84	4.67	1	100.00%	0.2	0	0.00%	0.0
Storm Spirit	16	22.22%	27.10	93.46	2	0.00%	0.4	14	35.71%	2.0
Centaur Warrunner	4	5.56%	26.17	27.10	2	50.00%	0.4	2	50.00%	0.3
Lich	4	5.56%	26.17	27.10	2	50.00%	0.4	2	50.00%	0.3
Lifestealer	4	5.56%	24.30	36.45	3	33.33%	0.6	1	100.00%	0.1
Tidehunter	2	2.78%	23.36	10.28	1	100.00%	0.2	1	0.00%	0.1
Phantom Assassin	6	8.33%	22.43	48.60	2	0.00%	0.4	4	75.00%	0.6
Wraith King	6	8.33%	22.43	48.60	2	0.00%	0.4	4	75.00%	0.6
Warlock	2	2.78%	20.56	19.63	2	50.00%	0.4	0	0.00%	0.0
Treant Protector	1	1.39%	19.63	6.54	0	0.00%	0.0	1	100.00%	0.1
Venomancer	3	4.17%	18.69	33.64	2	50.00%	0.4	1	0.00%	0.1
Morphling	4	5.56%	17.76	42.99	2	50.00%	0.4	2	0.00%	0.3
Sniper	3	4.17%	16.82	39.25	3	33.33%	0.6	0	0.00%	0.0
Death Prophet	7	9.72%	15.89	59.81	1	0.00%	0.2	6	33.33%	0.9
Ursa	4	5.56%	14.95	49.53	3	33.33%	0.6	1	0.00%	0.1
Leshrac	9	12.50%	14.02	85.98	2	0.00%	0.4	7	28.57%	1.0
Naga Siren	7	9.72%	13.08	74.77	3	33.33%	0.6	4	0.00%	0.6
Phoenix	9	12.50%	12.15	99.07	6	0.00%	1.2	3	66.67%	0.4
Arc Warden	1	1.39%	11.21	32.71	1	0.00%	0.2	0	0.00%	0.0
Troll Warlord	1	1.39%	11.21	32.71	1	0.00%	0.2	0	0.00%	0.0
Dark Willow	1	1.39%	11.21	32.71	1	0.00%	0.2	0	0.00%	0.0
Sven	1	1.39%	11.21	32.71	1	0.00%	0.2	0	0.00%	0.0
Spirit Breaker	2	2.78%	7.48	53.27	2	0.00%	0.4	0	0.00%	0.0
Earthshaker	1	1.39%	6.54	32.71	1	0.00%	0.2	0	0.00%	0.0
Vengeful Spirit	1	1.39%	5.61	18.69	0	0.00%	0.0	1	0.00%	0.1
Huskar	1	1.39%	5.61	18.69	0	0.00%	0.0	1	0.00%	0.1
Outworld Destroyer	1	1.39%	3.74	32.71	1	0.00%	0.2	0	0.00%	0.0
Shadow Demon	2	2.78%	2.80	53.27	2	0.00%	0.4	0	0.00%	0.0
Abaddon	4	5.56%	1.87	70.09	1	0.00%	0.2	3	0.00%	0.4
Ogre Magi	1	1.39%	0.93	18.69	0	0.00%	0.0	1	0.00%	0.1