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): 3 - Median hero bans (mb): 5 - Matches: 44

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

Balance rank	Winrate	Pickrate	Contest Rate
63.3	84.3	43.5	40.0

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Morphling	32	72.73%	100.00	52.63	10	60.00%	3.3	22	72.73%	4.4
Phantom Lancer	41	93.18%	98.95	81.05	16	75.00%	5.3	25	40.00%	5.0
Magnus	33	75.00%	97.89	71.58	12	83.33%	4.0	21	38.10%	4.2
Chen	42	95.45%	96.84	89.47	9	66.67%	3.0	33	51.52%	6.6
Dragon Knight	8	18.18%	95.79	10.53	2	100.00%	0.7	6	83.33%	1.2
Ember Spirit	39	88.64%	94.74	90.53	22	59.09%	7.3	17	47.06%	3.4
Io	44	100.00%	93.68	95.79	3	66.67%	1.0	41	51.22%	8.2
Windranger	33	75.00%	92.63	82.11	23	56.52%	7.7	10	50.00%	2.0
Lone Druid	17	38.64%	91.58	40.00	2	50.00%	0.7	15	73.33%	3.0
Kunkka	17	38.64%	90.53	47.37	4	50.00%	1.3	13	76.92%	2.6
Witch Doctor	21	47.73%	89.47	55.79	17	64.71%	5.7	4	25.00%	0.8
Shadow Fiend	8	18.18%	88.42	11.58	3	66.67%	1.0	5	100.00%	1.0
Bloodseeker	30	68.18%	87.37	80.00	5	40.00%	1.7	25	60.00%	5.0
Naga Siren	37	84.09%	86.32	96.84	9	44.44%	3.0	28	53.57%	5.6
Faceless Void	10	22.73%	85.26	20.00	5	60.00%	1.7	5	100.00%	1.0
Lina	18	40.91%	84.21	56.84	10	60.00%	3.3	8	50.00%	1.6
Pangolier	11	25.00%	83.16	36.84	4	50.00%	1.3	7	85.71%	1.4
Winter Wyvern	16	36.36%	82.11	51.58	8	62.50%	2.7	8	50.00%	1.6
Mirana	19	43.18%	81.05	72.63	13	46.15%	4.3	6	83.33%	1.2
Lycan	33	75.00%	80.00	98.95	5	40.00%	1.7	28	46.43%	5.6
Skywrath Mage	23	52.27%	78.95	86.32	12	50.00%	4.0	11	45.45%	2.2
Warlock	16	36.36%	77.89	65.26	10	60.00%	3.3	6	33.33%	1.2
Clockwerk	16	36.36%	76.84	68.42	9	44.44%	3.0	7	71.43%	1.4
Beastmaster	27	61.36%	75.79	97.89	13	53.85%	4.3	14	21.43%	2.8
Oracle	10	22.73%	74.74	48.42	6	66.67%	2.0	4	25.00%	0.8
Night Stalker	20	45.45%	73.68	91.58	7	42.86%	2.3	13	46.15%	2.6
Nature's Prophet	13	29.55%	72.63	66.32	9	44.44%	3.0	4	75.00%	0.8
Tusk	4	9.09%	71.58	12.63	4	75.00%	1.3	0	0.00%	0.0
Undying	19	43.18%	70.53	92.63	11	54.55%	3.7	8	12.50%	1.6
Huskar	9	20.45%	69.47	41.05	3	66.67%	1.0	6	50.00%	1.2
Leshrac	11	25.00%	68.42	64.21	8	37.50%	2.7	3	100.00%	0.6
Brewmaster	12	27.27%	67.37	67.37	5	60.00%	1.7	7	28.57%	1.4
Earth Spirit	4	9.09%	66.32	14.74	3	66.67%	1.0	1	100.00%	0.2
Slark	4	9.09%	66.32	14.74	3	66.67%	1.0	1	100.00%	0.2
Zeus	11	25.00%	64.21	61.05	6	50.00%	2.0	5	40.00%	1.0
Invoker	10	22.73%	63.16	50.53	4	75.00%	1.3	6	16.67%	1.2
Doom	9	20.45%	62.11	49.47	5	60.00%	1.7	4	25.00%	0.8
Spectre	14	31.82%	61.05	85.26	8	37.50%	2.7	6	50.00%	1.2
Broodmother	13	29.55%	60.00	74.74	3	33.33%	1.0	10	50.00%	2.0
Tinker	2	4.55%	58.95	1.05	1	100.00%	0.3	1	100.00%	0.2
Pugna	13	29.55%	57.89	84.21	7	57.14%	2.3	6	0.00%	1.2
Spirit Breaker	4	9.09%	56.84	15.79	2	100.00%	0.7	2	0.00%	0.4
Bane	5	11.36%	55.79	35.79	4	50.00%	1.3	1	100.00%	0.2
Death Prophet	9	20.45%	54.74	60.00	3	33.33%	1.0	6	50.00%	1.2
Shadow Demon	8	18.18%	53.68	76.84	8	37.50%	2.7	0	0.00%	0.0
Dark Willow	5	11.36%	52.63	38.95	3	33.33%	1.0	2	100.00%	0.4
Batrider	4	9.09%	51.58	37.89	4	50.00%	1.3	0	0.00%	0.0
Axe	11	25.00%	50.53	93.68	5	20.00%	1.7	6	50.00%	1.2
Earthshaker	1	2.27%	49.47	3.16	1	100.00%	0.3	0	0.00%	0.0
Weaver	1	2.27%	49.47	3.16	1	100.00%	0.3	0	0.00%	0.0
Centaur Warrunner	1	2.27%	49.47	9.47	1	100.00%	0.3	0	0.00%	0.0
Razor	1	2.27%	49.47	9.47	1	100.00%	0.3	0	0.00%	0.0
Abaddon	1	2.27%	49.47	9.47	1	100.00%	0.3	0	0.00%	0.0
Storm Spirit	7	15.91%	44.21	62.11	4	25.00%	1.3	3	66.67%	0.6
Nyx Assassin	6	13.64%	43.16	58.95	5	40.00%	1.7	1	0.00%	0.2
Elder Titan	9	20.45%	42.11	83.16	4	25.00%	1.3	5	40.00%	1.0
Luna	5	11.36%	41.05	44.21	2	50.00%	0.7	3	33.33%	0.6
Lifestealer	5	11.36%	41.05	44.21	2	50.00%	0.7	3	33.33%	0.6
Templar Assassin	8	18.18%	38.95	87.37	6	33.33%	2.0	2	0.00%	0.4
Medusa	7	15.91%	37.89	63.16	2	0.00%	0.7	5	60.00%	1.0
Troll Warlord	6	13.64%	36.84	57.89	3	33.33%	1.0	3	33.33%	0.6
Underlord	7	15.91%	35.79	75.79	3	33.33%	1.0	4	25.00%	0.8
Phantom Assassin	2	4.55%	34.74	18.95	2	50.00%	0.7	0	0.00%	0.0
Dark Seer	2	4.55%	34.74	18.95	2	50.00%	0.7	0	0.00%	0.0
Gyrocopter	1	2.27%	32.63	6.32	0	0.00%	0.0	1	100.00%	0.2
Viper	1	2.27%	32.63	6.32	0	0.00%	0.0	1	100.00%	0.2
Disruptor	1	2.27%	32.63	6.32	0	0.00%	0.0	1	100.00%	0.2
Phoenix	13	29.55%	29.47	100.00	6	16.67%	2.0	7	14.29%	1.4
Rubick	3	6.82%	28.42	46.32	3	33.33%	1.0	0	0.00%	0.0
Lion	3	6.82%	28.42	46.32	3	33.33%	1.0	0	0.00%	0.0
Monkey King	6	13.64%	26.32	73.68	2	50.00%	0.7	4	0.00%	0.8
Lich	5	11.36%	25.26	70.53	3	33.33%	1.0	2	0.00%	0.4
Drow Ranger	5	11.36%	25.26	70.53	3	33.33%	1.0	2	0.00%	0.4
Treant Protector	5	11.36%	23.16	77.89	4	25.00%	1.3	1	0.00%	0.2
Jakiro	6	13.64%	22.11	94.74	5	20.00%	1.7	1	0.00%	0.2
Juggernaut	3	6.82%	21.05	26.32	0	0.00%	0.0	3	33.33%	0.6
Omniknight	2	4.55%	20.00	25.26	1	0.00%	0.3	1	100.00%	0.2
Vengeful Spirit	2	4.55%	20.00	25.26	1	0.00%	0.3	1	100.00%	0.2
Puck	2	4.55%	20.00	25.26	1	0.00%	0.3	1	100.00%	0.2
Outworld Destroyer	2	4.55%	20.00	25.26	1	0.00%	0.3	1	100.00%	0.2
Legion Commander	2	4.55%	20.00	25.26	1	0.00%	0.3	1	100.00%	0.2
Visage	3	6.82%	14.74	42.11	1	0.00%	0.3	2	50.00%	0.4
Anti-Mage	3	6.82%	13.68	88.42	3	0.00%	1.0	0	0.00%	0.0
Queen of Pain	1	2.27%	12.63	16.84	0	0.00%	0.0	1	0.00%	0.2
Silencer	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Alchemist	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Ancient Apparition	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Enchantress	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Dazzle	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Enigma	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Tidehunter	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Tiny	1	2.27%	11.58	34.74	1	0.00%	0.3	0	0.00%	0.0
Arc Warden	2	4.55%	3.16	54.74	2	0.00%	0.7	0	0.00%	0.0
Sand King	2	4.55%	3.16	54.74	2	0.00%	0.7	0	0.00%	0.0
Venomancer	3	6.82%	1.05	80.00	2	0.00%	0.7	1	0.00%	0.2