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): 5 - Matches: 54

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

Balance rank	Winrate	Pickrate	Contest Rate
61.2	82.4	41.9	36.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Kunkka	42	77.78%	100.00	68.42	14	64.29%	2.8	28	60.71%	5.6
Dark Seer	16	29.63%	98.95	26.32	5	80.00%	1.0	11	72.73%	2.2
Faceless Void	21	38.89%	97.89	42.11	9	66.67%	1.8	12	75.00%	2.4
Sven	26	48.15%	96.84	50.53	12	58.33%	2.4	14	78.57%	2.8
Rubick	22	40.74%	95.79	46.32	18	66.67%	3.6	4	75.00%	0.8
Shadow Demon	43	79.63%	94.74	78.95	18	55.56%	3.6	25	56.00%	5.0
Dragon Knight	46	85.19%	93.68	81.05	10	40.00%	2.0	36	61.11%	7.2
Tiny	50	92.59%	92.63	84.21	19	47.37%	3.8	31	58.06%	6.2
Luna	23	42.59%	91.58	52.63	10	60.00%	2.0	13	69.23%	2.6
Timbersaw	53	98.15%	90.53	88.42	6	66.67%	1.2	47	46.81%	9.4
Gyrocopter	34	62.96%	89.47	74.74	17	58.82%	3.4	17	52.94%	3.4
Leshrac	32	59.26%	88.42	72.63	10	50.00%	2.0	22	63.64%	4.4
Disruptor	26	48.15%	87.37	67.37	15	66.67%	3.0	11	36.36%	2.2
Enigma	21	38.89%	86.32	53.68	8	62.50%	1.6	13	61.54%	2.6
Doom	25	46.30%	85.26	65.26	8	37.50%	1.6	17	76.47%	3.4
Meepo	6	11.11%	84.21	8.42	3	100.00%	0.6	3	66.67%	0.6
Mars	29	53.70%	83.16	73.68	13	61.54%	2.6	16	43.75%	3.2
Chen	47	87.04%	82.11	91.58	0	0.00%	0.0	47	46.81%	9.4
Lifestealer	25	46.30%	81.05	71.58	10	50.00%	2.0	15	60.00%	3.0
Zeus	16	29.63%	80.00	49.47	9	55.56%	1.8	7	71.43%	1.4
Puck	35	64.81%	78.95	83.16	13	53.85%	2.6	22	40.91%	4.4
Primal Beast	46	85.19%	77.89	95.79	9	44.44%	1.8	37	43.24%	7.4
Keeper of the Light	23	42.59%	76.84	69.47	5	60.00%	1.0	18	50.00%	3.6
Centaur Warrunner	37	68.52%	75.79	87.37	12	33.33%	2.4	25	56.00%	5.0
Dark Willow	12	22.22%	74.74	45.26	9	66.67%	1.8	3	33.33%	0.6
Beastmaster	16	29.63%	73.68	58.95	11	54.55%	2.2	5	60.00%	1.0
Death Prophet	16	29.63%	72.63	55.79	7	57.14%	1.4	9	55.56%	1.8
Pudge	6	11.11%	71.58	10.53	3	100.00%	0.6	3	33.33%	0.6
Batrider	39	72.22%	70.53	97.89	15	46.67%	3.0	24	33.33%	4.8
Bane	6	11.11%	69.47	14.74	5	80.00%	1.0	1	0.00%	0.2
Pangolier	24	44.44%	68.42	80.00	9	55.56%	1.8	15	33.33%	3.0
Morphling	29	53.70%	67.37	86.32	11	45.45%	2.2	18	38.89%	3.6
Brewmaster	20	37.04%	66.32	75.79	7	57.14%	1.4	13	38.46%	2.6
Crystal Maiden	31	57.41%	65.26	93.68	21	42.86%	4.2	10	30.00%	2.0
Alchemist	16	29.63%	64.21	66.32	6	33.33%	1.2	10	70.00%	2.0
Nature's Prophet	6	11.11%	63.16	27.37	5	60.00%	1.0	1	100.00%	0.2
Pugna	6	11.11%	62.11	22.11	3	66.67%	0.6	3	66.67%	0.6
Skywrath Mage	2	3.70%	61.05	4.21	2	100.00%	0.4	0	0.00%	0.0
Lion	2	3.70%	61.05	4.21	2	100.00%	0.4	0	0.00%	0.0
Invoker	5	9.26%	58.95	12.63	2	50.00%	0.4	3	100.00%	0.6
Earthshaker	7	12.96%	57.89	37.89	5	60.00%	1.0	2	50.00%	0.4
Omniknight	7	12.96%	56.84	34.74	3	66.67%	0.6	4	50.00%	0.8
Techies	25	46.30%	55.79	94.74	15	33.33%	3.0	10	40.00%	2.0
Undying	12	22.22%	54.74	64.21	5	60.00%	1.0	7	28.57%	1.4
Visage	4	7.41%	53.68	11.58	3	66.67%	0.6	1	100.00%	0.2
Templar Assassin	19	35.19%	52.63	85.26	11	27.27%	2.2	8	62.50%	1.6
Bounty Hunter	2	3.70%	51.58	1.05	1	100.00%	0.2	1	100.00%	0.2
Ember Spirit	7	12.96%	50.53	36.84	2	50.00%	0.4	5	60.00%	1.0
Phoenix	9	16.67%	49.47	54.74	4	50.00%	0.8	5	40.00%	1.0
Slark	6	11.11%	48.42	28.42	1	100.00%	0.2	5	40.00%	1.0
Vengeful Spirit	9	16.67%	47.37	62.11	5	60.00%	1.0	4	0.00%	0.8
Weaver	6	11.11%	46.32	40.00	4	50.00%	0.8	2	50.00%	0.4
Windranger	5	9.26%	45.26	25.26	2	50.00%	0.4	3	66.67%	0.6
Phantom Assassin	4	7.41%	44.21	24.21	3	66.67%	0.6	1	0.00%	0.2
Elder Titan	4	7.41%	44.21	24.21	3	66.67%	0.6	1	0.00%	0.2
Troll Warlord	2	3.70%	42.11	6.32	0	0.00%	0.0	2	100.00%	0.4
Outworld Destroyer	2	3.70%	42.11	6.32	0	0.00%	0.0	2	100.00%	0.4
Sniper	4	7.41%	40.00	16.84	1	100.00%	0.2	3	33.33%	0.6
Dazzle	4	7.41%	40.00	16.84	1	100.00%	0.2	3	33.33%	0.6
Hoodwink	4	7.41%	37.89	35.79	4	50.00%	0.8	0	0.00%	0.0
Storm Spirit	11	20.37%	36.84	76.84	4	25.00%	0.8	7	42.86%	1.4
Razor	17	31.48%	35.79	98.95	10	30.00%	2.0	7	14.29%	1.4
Tidehunter	5	9.26%	34.74	44.21	4	50.00%	0.8	1	0.00%	0.2
Medusa	17	31.48%	33.68	96.84	6	33.33%	1.2	11	18.18%	2.2
Lich	1	1.85%	32.63	7.37	1	100.00%	0.2	0	0.00%	0.0
Grimstroke	6	11.11%	31.58	51.58	4	25.00%	0.8	2	100.00%	0.4
Lina	13	24.07%	30.53	92.63	10	20.00%	2.0	3	66.67%	0.6
Enchantress	4	7.41%	29.47	29.47	2	50.00%	0.4	2	50.00%	0.4
Magnus	7	12.96%	28.42	63.16	4	25.00%	0.8	3	66.67%	0.6
Broodmother	5	9.26%	27.37	48.42	3	33.33%	0.6	2	50.00%	0.4
Phantom Lancer	2	3.70%	26.32	21.05	2	50.00%	0.4	0	0.00%	0.0
Bloodseeker	2	3.70%	26.32	21.05	2	50.00%	0.4	0	0.00%	0.0
Monkey King	2	3.70%	26.32	21.05	2	50.00%	0.4	0	0.00%	0.0
Muerta	2	3.70%	26.32	21.05	2	50.00%	0.4	0	0.00%	0.0
Dawnbreaker	1	1.85%	22.11	2.11	0	0.00%	0.0	1	100.00%	0.2
Viper	6	11.11%	21.05	60.00	1	100.00%	0.2	5	0.00%	1.0
Naga Siren	7	12.96%	20.00	70.53	1	100.00%	0.2	6	0.00%	1.2
Clockwerk	3	5.56%	18.95	41.05	3	33.33%	0.6	0	0.00%	0.0
Shadow Shaman	4	7.41%	17.89	61.05	4	25.00%	0.8	0	0.00%	0.0
Mirana	2	3.70%	16.84	9.47	0	0.00%	0.0	2	50.00%	0.4
Tusk	8	14.81%	15.79	90.53	5	0.00%	1.0	3	66.67%	0.6
Snapfire	6	11.11%	14.74	82.11	6	16.67%	1.2	0	0.00%	0.0
Terrorblade	13	24.07%	13.68	100.00	7	14.29%	1.4	6	0.00%	1.2
Huskar	4	7.41%	12.63	43.16	0	0.00%	0.0	4	25.00%	0.8
Anti-Mage	8	14.81%	11.58	89.47	1	0.00%	0.2	7	14.29%	1.4
Void Spirit	5	9.26%	10.53	77.89	3	0.00%	0.6	2	50.00%	0.4
Queen of Pain	2	3.70%	9.47	38.95	0	0.00%	0.0	2	0.00%	0.4
Juggernaut	2	3.70%	8.42	57.89	2	0.00%	0.4	0	0.00%	0.0
Slardar	2	3.70%	8.42	57.89	2	0.00%	0.4	0	0.00%	0.0
Ursa	2	3.70%	6.32	47.37	1	0.00%	0.2	1	0.00%	0.2
Arc Warden	1	1.85%	5.26	33.68	1	0.00%	0.2	0	0.00%	0.0
Winter Wyvern	1	1.85%	5.26	33.68	1	0.00%	0.2	0	0.00%	0.0
Oracle	1	1.85%	5.26	33.68	1	0.00%	0.2	0	0.00%	0.0
Necrophos	1	1.85%	2.11	13.68	0	0.00%	0.0	1	0.00%	0.2
Io	1	1.85%	1.05	33.68	1	0.00%	0.2	0	0.00%	0.0