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): 5 - Matches: 44

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

Balance rank	Winrate	Pickrate	Contest Rate
59.2	75.3	44.7	39.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Alchemist	15	34.09%	100.00	20.79	9	88.89%	2.3	6	66.67%	1.2
Undying	24	54.55%	99.01	43.56	7	71.43%	1.8	17	76.47%	3.4
Razor	12	27.27%	98.02	15.84	7	85.71%	1.8	5	80.00%	1.0
Dark Willow	5	11.36%	97.03	2.97	5	100.00%	1.3	0	0.00%	0.0
Viper	31	70.45%	96.04	66.34	7	71.43%	1.8	24	58.33%	4.8
Bloodseeker	26	59.09%	95.05	55.45	6	66.67%	1.5	20	65.00%	4.0
Batrider	32	72.73%	94.06	70.30	9	55.56%	2.3	23	65.22%	4.6
Phantom Lancer	11	25.00%	93.07	17.82	4	75.00%	1.0	7	85.71%	1.4
Faceless Void	37	84.09%	92.08	82.18	6	50.00%	1.5	31	58.06%	6.2
Morphling	16	36.36%	91.09	38.61	4	75.00%	1.0	12	66.67%	2.4
Mars	21	47.73%	90.10	65.35	11	63.64%	2.8	10	50.00%	2.0
Dazzle	23	52.27%	89.11	71.29	17	64.71%	4.3	6	16.67%	1.2
Juggernaut	12	27.27%	88.12	29.70	2	50.00%	0.5	10	80.00%	2.0
Monkey King	23	52.27%	87.13	74.26	11	54.55%	2.8	12	58.33%	2.4
Bristleback	25	56.82%	86.14	76.24	6	66.67%	1.5	19	47.37%	3.8
Storm Spirit	13	29.55%	85.15	39.60	5	80.00%	1.3	8	50.00%	1.6
Slark	17	38.64%	84.16	53.47	3	66.67%	0.8	14	57.14%	2.8
Chen	35	79.55%	83.17	93.07	3	66.67%	0.8	32	43.75%	6.4
Ancient Apparition	4	9.09%	82.18	8.91	1	100.00%	0.3	3	100.00%	0.6
Puck	29	65.91%	81.19	89.11	9	22.22%	2.3	20	70.00%	4.0
Death Prophet	20	45.45%	80.20	73.27	8	50.00%	2.0	12	58.33%	2.4
Beastmaster	28	63.64%	79.21	88.12	9	66.67%	2.3	19	31.58%	3.8
Tiny	24	54.55%	78.22	84.16	15	46.67%	3.8	9	55.56%	1.8
Marci	31	70.45%	77.23	95.05	22	40.91%	5.5	9	55.56%	1.8
Earth Spirit	4	9.09%	76.24	9.90	3	100.00%	0.8	1	0.00%	0.2
Hoodwink	18	40.91%	75.25	80.20	15	46.67%	3.8	3	66.67%	0.6
Vengeful Spirit	6	13.64%	74.26	26.73	4	75.00%	1.0	2	50.00%	0.4
Enchantress	15	34.09%	73.27	69.31	7	42.86%	1.8	8	62.50%	1.6
Clockwerk	12	27.27%	72.28	60.40	9	44.44%	2.3	3	100.00%	0.6
Timbersaw	11	25.00%	71.29	48.51	1	0.00%	0.3	10	70.00%	2.0
Visage	13	29.55%	70.30	67.33	9	55.56%	2.3	4	25.00%	0.8
Queen of Pain	24	54.55%	69.31	94.06	8	37.50%	2.0	16	43.75%	3.2
Pudge	8	18.18%	68.32	47.52	6	50.00%	1.5	2	100.00%	0.4
Jakiro	2	4.55%	67.33	4.95	2	100.00%	0.5	0	0.00%	0.0
Phantom Assassin	15	34.09%	66.34	78.22	7	42.86%	1.8	8	50.00%	1.6
Zeus	12	27.27%	65.35	62.38	4	50.00%	1.0	8	50.00%	1.6
Skywrath Mage	16	36.36%	64.36	85.15	10	50.00%	2.5	6	16.67%	1.2
Enigma	33	75.00%	63.37	100.00	14	21.43%	3.5	19	47.37%	3.8
Ursa	9	20.45%	62.38	56.44	7	42.86%	1.8	2	100.00%	0.4
Centaur Warrunner	6	13.64%	61.39	32.67	4	75.00%	1.0	2	0.00%	0.4
Omniknight	12	27.27%	60.40	75.25	6	66.67%	1.5	6	0.00%	1.2
Winter Wyvern	19	43.18%	59.41	91.09	5	40.00%	1.3	14	35.71%	2.8
Warlock	3	6.82%	58.42	11.88	2	100.00%	0.5	1	0.00%	0.2
Tidehunter	3	6.82%	58.42	11.88	2	100.00%	0.5	1	0.00%	0.2
Windranger	2	4.55%	56.44	7.92	1	100.00%	0.3	1	100.00%	0.2
Weaver	27	61.36%	55.45	99.01	5	20.00%	1.3	22	36.36%	4.4
Rubick	6	13.64%	54.46	42.57	5	60.00%	1.3	1	0.00%	0.2
Dragon Knight	7	15.91%	53.47	49.50	3	33.33%	0.8	4	75.00%	0.8
Keeper of the Light	6	13.64%	52.48	31.68	1	100.00%	0.3	5	40.00%	1.0
Sven	3	6.82%	51.49	14.85	3	66.67%	0.8	0	0.00%	0.0
Lina	15	34.09%	50.50	92.08	6	50.00%	1.5	9	11.11%	1.8
Doom	4	9.09%	49.50	28.71	3	66.67%	0.8	1	0.00%	0.2
Void Spirit	12	27.27%	48.51	86.14	5	40.00%	1.3	7	28.57%	1.4
Nature's Prophet	2	4.55%	47.52	5.94	0	0.00%	0.0	2	100.00%	0.4
Leshrac	2	4.55%	47.52	3.96	0	0.00%	0.0	2	100.00%	0.4
Ember Spirit	20	45.45%	45.54	98.02	10	10.00%	2.5	10	60.00%	2.0
Phoenix	5	11.36%	44.55	37.62	3	33.33%	0.8	2	100.00%	0.4
Dawnbreaker	17	38.64%	43.56	97.03	8	37.50%	2.0	9	11.11%	1.8
Sniper	4	9.09%	42.57	21.78	1	0.00%	0.3	3	100.00%	0.6
Io	8	18.18%	41.58	61.39	2	50.00%	0.5	6	33.33%	1.2
Templar Assassin	10	22.73%	40.59	81.19	5	40.00%	1.3	5	20.00%	1.0
Chaos Knight	3	6.82%	39.60	16.83	2	50.00%	0.5	1	100.00%	0.2
Pangolier	7	15.91%	38.61	58.42	3	33.33%	0.8	4	50.00%	0.8
Kunkka	9	20.45%	37.62	72.28	2	50.00%	0.5	7	28.57%	1.4
Shadow Fiend	11	25.00%	36.63	87.13	5	40.00%	1.3	6	16.67%	1.2
Gyrocopter	1	2.27%	35.64	1.98	1	100.00%	0.3	0	0.00%	0.0
Outworld Destroyer	1	2.27%	35.64	6.93	1	100.00%	0.3	0	0.00%	0.0
Bounty Hunter	1	2.27%	35.64	1.98	1	100.00%	0.3	0	0.00%	0.0
Snapfire	9	20.45%	32.67	83.17	7	28.57%	1.8	2	50.00%	0.4
Lycan	8	18.18%	31.68	59.41	0	0.00%	0.0	8	37.50%	1.6
Terrorblade	11	25.00%	30.69	90.10	3	0.00%	0.8	8	50.00%	1.6
Invoker	6	13.64%	29.70	54.46	2	50.00%	0.5	4	25.00%	0.8
Medusa	2	4.55%	28.71	13.86	1	100.00%	0.3	1	0.00%	0.2
Tinker	2	4.55%	28.71	13.86	1	100.00%	0.3	1	0.00%	0.2
Primal Beast	11	25.00%	26.73	96.04	6	16.67%	1.5	5	40.00%	1.0
Night Stalker	5	11.36%	25.74	41.58	0	0.00%	0.0	5	40.00%	1.0
Drow Ranger	2	4.55%	24.75	25.74	2	50.00%	0.5	0	0.00%	0.0
Slardar	2	4.55%	24.75	25.74	2	50.00%	0.5	0	0.00%	0.0
Ogre Magi	2	4.55%	24.75	25.74	2	50.00%	0.5	0	0.00%	0.0
Bane	2	4.55%	24.75	25.74	2	50.00%	0.5	0	0.00%	0.0
Broodmother	6	13.64%	20.79	52.48	0	0.00%	0.0	6	33.33%	1.2
Disruptor	3	6.82%	19.80	36.63	2	50.00%	0.5	1	0.00%	0.2
Abaddon	3	6.82%	19.80	36.63	2	50.00%	0.5	1	0.00%	0.2
Wraith King	5	11.36%	17.82	77.23	4	25.00%	1.0	1	0.00%	0.2
Meepo	3	6.82%	16.83	30.69	0	0.00%	0.0	3	33.33%	0.6
Anti-Mage	2	4.55%	15.84	27.72	1	0.00%	0.3	1	100.00%	0.2
Necrophos	3	6.82%	14.85	46.53	1	0.00%	0.3	2	50.00%	0.4
Dark Seer	3	6.82%	14.85	46.53	1	0.00%	0.3	2	50.00%	0.4
Luna	3	6.82%	14.85	46.53	1	0.00%	0.3	2	50.00%	0.4
Venomancer	4	9.09%	11.88	57.43	1	0.00%	0.3	3	33.33%	0.6
Shadow Demon	4	9.09%	10.89	68.32	2	0.00%	0.5	2	50.00%	0.4
Lifestealer	1	2.27%	9.90	18.81	0	0.00%	0.0	1	0.00%	0.2
Earthshaker	1	2.27%	8.91	34.65	1	0.00%	0.3	0	0.00%	0.0
Axe	3	6.82%	7.92	79.21	2	0.00%	0.5	1	0.00%	0.2
Lone Druid	2	4.55%	6.93	40.59	0	0.00%	0.0	2	0.00%	0.4
Witch Doctor	1	2.27%	5.94	34.65	1	0.00%	0.3	0	0.00%	0.0
Troll Warlord	2	4.55%	4.95	51.49	1	0.00%	0.3	1	0.00%	0.2
Nyx Assassin	2	4.55%	4.95	51.49	1	0.00%	0.3	1	0.00%	0.2
Crystal Maiden	2	4.55%	2.97	64.36	2	0.00%	0.5	0	0.00%	0.0
Naga Siren	2	4.55%	2.97	64.36	2	0.00%	0.5	0	0.00%	0.0
Spectre	1	2.27%	0.99	20.79	0	0.00%	0.0	1	0.00%	0.2