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): 6 - Matches: 45

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

Balance rank	Winrate	Pickrate	Contest Rate
51.3	72.1	29.8	31.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Doom	43	95.56%	100.00	75.27	5	80.00%	1.3	38	55.26%	6.3
Death Prophet	10	22.22%	98.92	15.05	5	80.00%	1.3	5	100.00%	0.8
Meepo	13	28.89%	97.85	29.03	7	85.71%	1.8	6	66.67%	1.0
Vengeful Spirit	43	95.56%	96.77	91.40	20	50.00%	5.0	23	60.87%	3.8
Chen	42	93.33%	95.70	89.25	4	100.00%	1.0	38	44.74%	6.3
Timbersaw	40	88.89%	94.62	90.32	7	57.14%	1.8	33	51.52%	5.5
Magnus	26	57.78%	93.55	66.67	14	64.29%	3.5	12	41.67%	2.0
Techies	25	55.56%	92.47	65.59	17	58.82%	4.3	8	50.00%	1.3
Marci	6	13.33%	91.40	13.98	6	83.33%	1.5	0	0.00%	0.0
Batrider	32	71.11%	90.32	86.02	16	50.00%	4.0	16	56.25%	2.7
Puck	28	62.22%	89.25	78.49	11	54.55%	2.8	17	52.94%	2.8
Tiny	22	48.89%	88.17	60.22	11	63.64%	2.8	11	45.45%	1.8
Alchemist	20	44.44%	87.10	55.91	7	57.14%	1.8	13	61.54%	2.2
Naga Siren	16	35.56%	86.02	48.39	8	50.00%	2.0	8	87.50%	1.3
Tidehunter	12	26.67%	84.95	41.94	4	75.00%	1.0	8	62.50%	1.3
Windranger	32	71.11%	83.87	88.17	12	50.00%	3.0	20	50.00%	3.3
Ember Spirit	38	84.44%	82.80	95.70	13	46.15%	3.3	25	48.00%	4.2
Hoodwink	29	64.44%	81.72	87.10	17	52.94%	4.3	12	41.67%	2.0
Primal Beast	26	57.78%	80.65	82.80	12	41.67%	3.0	14	64.29%	2.3
Pudge	8	17.78%	79.57	18.28	1	100.00%	0.3	7	71.43%	1.2
Weaver	4	8.89%	78.49	12.90	1	100.00%	0.3	3	100.00%	0.5
Night Stalker	4	8.89%	78.49	12.90	1	100.00%	0.3	3	100.00%	0.5
Mars	25	55.56%	76.34	81.72	9	44.44%	2.3	16	56.25%	2.7
Nature's Prophet	20	44.44%	75.27	62.37	6	50.00%	1.5	14	57.14%	2.3
Morphling	21	46.67%	74.19	69.89	8	62.50%	2.0	13	38.46%	2.2
Rubick	21	46.67%	73.12	76.34	11	54.55%	2.8	10	40.00%	1.7
Pangolier	28	62.22%	72.04	93.55	14	42.86%	3.5	14	50.00%	2.3
Faceless Void	38	84.44%	70.97	97.85	8	62.50%	2.0	30	30.00%	5.0
Centaur Warrunner	38	84.44%	69.89	98.92	12	41.67%	3.0	26	34.62%	4.3
Luna	16	35.56%	68.82	67.74	10	50.00%	2.5	6	50.00%	1.0
Sven	6	13.33%	67.74	31.18	6	66.67%	1.5	0	0.00%	0.0
Lion	12	26.67%	66.67	56.99	9	55.56%	2.3	3	33.33%	0.5
Razor	13	28.89%	65.59	54.84	4	50.00%	1.0	9	55.56%	1.5
Dragon Knight	17	37.78%	64.52	77.42	9	44.44%	2.3	8	50.00%	1.3
Gyrocopter	4	8.89%	63.44	17.20	4	75.00%	1.0	0	0.00%	0.0
Keeper of the Light	9	20.00%	62.37	43.01	3	33.33%	0.8	6	83.33%	1.0
Troll Warlord	23	51.11%	61.29	94.62	12	33.33%	3.0	11	54.55%	1.8
Clockwerk	2	4.44%	60.22	10.75	2	100.00%	0.5	0	0.00%	0.0
Slark	10	22.22%	59.14	47.31	3	66.67%	0.8	7	42.86%	1.2
Templar Assassin	17	37.78%	58.06	84.95	9	44.44%	2.3	8	37.50%	1.3
Sniper	5	11.11%	56.99	19.35	2	100.00%	0.5	3	33.33%	0.5
Kunkka	14	31.11%	55.91	68.82	6	33.33%	1.5	8	62.50%	1.3
Enchantress	21	46.67%	54.84	96.77	9	22.22%	2.3	12	58.33%	2.0
Grimstroke	11	24.44%	53.76	59.14	6	50.00%	1.5	5	40.00%	0.8
Arc Warden	2	4.44%	52.69	9.68	1	100.00%	0.3	1	100.00%	0.2
Skywrath Mage	2	4.44%	52.69	9.68	1	100.00%	0.3	1	100.00%	0.2
Brewmaster	2	4.44%	52.69	1.08	1	100.00%	0.3	1	100.00%	0.2
Huskar	5	11.11%	49.46	20.43	1	100.00%	0.3	4	50.00%	0.7
Phoenix	10	22.22%	48.39	61.29	6	50.00%	1.5	4	25.00%	0.7
Pugna	15	33.33%	47.31	92.47	7	14.29%	1.8	8	75.00%	1.3
Dark Seer	8	17.78%	46.24	58.06	6	50.00%	1.5	2	0.00%	0.3
Snapfire	10	22.22%	45.16	79.57	9	33.33%	2.3	1	100.00%	0.2
Slardar	6	13.33%	44.09	49.46	5	40.00%	1.3	1	100.00%	0.2
Treant Protector	2	4.44%	43.01	6.45	0	0.00%	0.0	2	100.00%	0.3
Storm Spirit	10	22.22%	41.94	70.97	4	25.00%	1.0	6	50.00%	1.0
Invoker	9	20.00%	40.86	63.44	2	100.00%	0.5	7	0.00%	1.2
Disruptor	1	2.22%	39.78	5.38	1	100.00%	0.3	0	0.00%	0.0
Elder Titan	1	2.22%	39.78	5.38	1	100.00%	0.3	0	0.00%	0.0
Phantom Lancer	1	2.22%	39.78	5.38	1	100.00%	0.3	0	0.00%	0.0
Dazzle	1	2.22%	39.78	5.38	1	100.00%	0.3	0	0.00%	0.0
Ursa	6	13.33%	35.48	52.69	4	25.00%	1.0	2	100.00%	0.3
Monkey King	20	44.44%	34.41	100.00	1	0.00%	0.3	19	26.32%	3.2
Terrorblade	6	13.33%	33.33	51.61	2	0.00%	0.5	4	75.00%	0.7
Lina	6	13.33%	33.33	51.61	2	0.00%	0.5	4	75.00%	0.7
Winter Wyvern	3	6.67%	31.18	30.11	1	0.00%	0.3	2	100.00%	0.3
Queen of Pain	8	17.78%	30.11	80.65	3	33.33%	0.8	5	20.00%	0.8
Void Spirit	2	4.44%	29.03	27.96	2	50.00%	0.5	0	0.00%	0.0
Ancient Apparition	1	2.22%	27.96	7.53	0	0.00%	0.0	1	100.00%	0.2
Crystal Maiden	3	6.67%	26.88	40.86	2	50.00%	0.5	1	0.00%	0.2
Shadow Demon	3	6.67%	26.88	40.86	2	50.00%	0.5	1	0.00%	0.2
Muerta	3	6.67%	24.73	45.16	3	33.33%	0.8	0	0.00%	0.0
Enigma	6	13.33%	23.66	64.52	2	0.00%	0.5	4	50.00%	0.7
Outworld Destroyer	2	4.44%	22.58	16.13	0	0.00%	0.0	2	50.00%	0.3
Viper	4	8.89%	21.51	46.24	0	0.00%	0.0	4	25.00%	0.7
Earthshaker	3	6.67%	20.43	44.09	1	0.00%	0.3	2	50.00%	0.3
Juggernaut	4	8.89%	19.35	53.76	1	0.00%	0.3	3	33.33%	0.5
Necrophos	1	2.22%	18.28	38.71	1	0.00%	0.3	0	0.00%	0.0
Lich	1	2.22%	18.28	38.71	1	0.00%	0.3	0	0.00%	0.0
Omniknight	1	2.22%	18.28	38.71	1	0.00%	0.3	0	0.00%	0.0
Mirana	1	2.22%	18.28	38.71	1	0.00%	0.3	0	0.00%	0.0
Tusk	1	2.22%	18.28	38.71	1	0.00%	0.3	0	0.00%	0.0
Abaddon	1	2.22%	12.90	26.88	0	0.00%	0.0	1	0.00%	0.2
Earth Spirit	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Axe	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Chaos Knight	1	2.22%	9.68	26.88	0	0.00%	0.0	1	0.00%	0.2
Medusa	1	2.22%	9.68	26.88	0	0.00%	0.0	1	0.00%	0.2
Oracle	1	2.22%	9.68	26.88	0	0.00%	0.0	1	0.00%	0.2
Anti-Mage	1	2.22%	9.68	26.88	0	0.00%	0.0	1	0.00%	0.2
Lone Druid	3	6.67%	5.38	74.19	2	0.00%	0.5	1	0.00%	0.2
Venomancer	3	6.67%	5.38	74.19	2	0.00%	0.5	1	0.00%	0.2
Bounty Hunter	3	6.67%	3.23	83.87	3	0.00%	0.8	0	0.00%	0.0
Broodmother	3	6.67%	2.15	74.19	2	0.00%	0.5	1	0.00%	0.2
Dawnbreaker	1	2.22%	1.08	26.88	0	0.00%	0.0	1	0.00%	0.2