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): 3 - Matches: 18

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

Balance rank	Winrate	Pickrate	Contest Rate
43.7	52.5	40.3	24.4

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Rubick	6	33.33%	100.00	17.81	5	100.00%	1.7	1	100.00%	0.3
Timbersaw	18	100.00%	98.63	63.01	4	100.00%	1.3	14	42.86%	4.7
Storm Spirit	8	44.44%	97.26	36.99	4	75.00%	1.3	4	75.00%	1.3
Mars	14	77.78%	95.89	61.64	8	62.50%	2.7	6	50.00%	2.0
Crystal Maiden	5	27.78%	94.52	24.66	5	80.00%	1.7	0	0.00%	0.0
Queen of Pain	3	16.67%	93.15	6.85	2	100.00%	0.7	1	100.00%	0.3
Invoker	11	61.11%	91.78	56.16	1	100.00%	0.3	10	50.00%	3.3
Nyx Assassin	12	66.67%	90.41	68.49	3	33.33%	1.0	9	66.67%	3.0
Dark Willow	4	22.22%	89.04	19.18	2	100.00%	0.7	2	50.00%	0.7
Juggernaut	12	66.67%	87.67	69.86	5	60.00%	1.7	7	42.86%	2.3
Nature's Prophet	11	61.11%	86.30	57.53	0	0.00%	0.0	11	54.55%	3.7
Keeper of the Light	12	66.67%	84.93	78.08	8	50.00%	2.7	4	50.00%	1.3
Chaos Knight	2	11.11%	83.56	10.96	2	100.00%	0.7	0	0.00%	0.0
Enigma	7	38.89%	82.19	47.95	3	33.33%	1.0	4	100.00%	1.3
Kunkka	7	38.89%	80.82	50.68	3	66.67%	1.0	4	50.00%	1.3
Puck	16	88.89%	79.45	97.26	4	0.00%	1.3	12	66.67%	4.0
Death Prophet	10	55.56%	78.08	65.75	2	50.00%	0.7	8	50.00%	2.7
Venomancer	6	33.33%	76.71	41.10	2	50.00%	0.7	4	75.00%	1.3
Batrider	4	22.22%	75.34	28.77	3	66.67%	1.0	1	100.00%	0.3
Tusk	7	38.89%	73.97	53.42	4	50.00%	1.3	3	66.67%	1.0
Gyrocopter	3	16.67%	72.60	20.55	2	100.00%	0.7	1	0.00%	0.3
Ancient Apparition	2	11.11%	71.23	2.74	1	100.00%	0.3	1	100.00%	0.3
Io	2	11.11%	71.23	2.74	1	100.00%	0.3	1	100.00%	0.3
Morphling	5	27.78%	68.49	39.73	3	66.67%	1.0	2	50.00%	0.7
Lycan	7	38.89%	67.12	49.32	0	0.00%	0.0	7	57.14%	2.3
Leshrac	4	22.22%	65.75	23.29	0	0.00%	0.0	4	75.00%	1.3
Phantom Assassin	4	22.22%	64.38	30.14	2	50.00%	0.7	2	100.00%	0.7
Mirana	8	44.44%	63.01	67.12	5	40.00%	1.7	3	66.67%	1.0
Beastmaster	14	77.78%	61.64	100.00	6	33.33%	2.0	8	37.50%	2.7
Ursa	9	50.00%	60.27	79.45	5	40.00%	1.7	4	50.00%	1.3
Clockwerk	7	38.89%	58.90	60.27	6	50.00%	2.0	1	0.00%	0.3
Pangolier	5	27.78%	57.53	42.47	2	50.00%	0.7	3	66.67%	1.0
Weaver	9	50.00%	56.16	82.19	3	33.33%	1.0	6	50.00%	2.0
Luna	3	16.67%	54.79	21.92	1	100.00%	0.3	2	50.00%	0.7
Tidehunter	13	72.22%	53.42	98.63	5	20.00%	1.7	8	50.00%	2.7
Viper	12	66.67%	52.05	95.89	2	50.00%	0.7	10	30.00%	3.3
Wraith King	11	61.11%	50.68	94.52	6	33.33%	2.0	5	40.00%	1.7
Earth Spirit	11	61.11%	50.68	94.52	6	33.33%	2.0	5	40.00%	1.7
Templar Assassin	2	11.11%	47.95	4.11	0	0.00%	0.0	2	100.00%	0.7
Void Spirit	8	44.44%	46.58	73.97	4	50.00%	1.3	4	25.00%	1.3
Naga Siren	4	22.22%	45.21	35.62	1	100.00%	0.3	3	33.33%	1.0
Medusa	10	55.56%	43.84	89.04	1	100.00%	0.3	9	22.22%	3.0
Undying	3	16.67%	42.47	32.88	2	50.00%	0.7	1	100.00%	0.3
Oracle	3	16.67%	42.47	32.88	2	50.00%	0.7	1	100.00%	0.3
Ember Spirit	9	50.00%	39.73	90.41	3	33.33%	1.0	6	33.33%	2.0
Phantom Lancer	8	44.44%	38.36	76.71	0	0.00%	0.0	8	37.50%	2.7
Witch Doctor	6	33.33%	36.99	64.38	4	50.00%	1.3	2	0.00%	0.7
Monkey King	6	33.33%	35.62	54.79	1	0.00%	0.3	5	60.00%	1.7
Enchantress	7	38.89%	34.25	80.82	4	25.00%	1.3	3	66.67%	1.0
Dazzle	1	5.56%	32.88	5.48	1	100.00%	0.3	0	0.00%	0.0
Ogre Magi	1	5.56%	32.88	9.59	1	100.00%	0.3	0	0.00%	0.0
Dark Seer	1	5.56%	32.88	9.59	1	100.00%	0.3	0	0.00%	0.0
Zeus	1	5.56%	32.88	13.70	1	100.00%	0.3	0	0.00%	0.0
Axe	1	5.56%	32.88	13.70	1	100.00%	0.3	0	0.00%	0.0
Troll Warlord	9	50.00%	26.03	87.67	0	0.00%	0.0	9	33.33%	3.0
Lion	5	27.78%	24.66	58.90	5	40.00%	1.7	0	0.00%	0.0
Tiny	6	33.33%	23.29	75.34	3	33.33%	1.0	3	33.33%	1.0
Grimstroke	6	33.33%	21.92	83.56	4	25.00%	1.3	2	50.00%	0.7
Outworld Destroyer	1	5.56%	20.55	16.44	0	0.00%	0.0	1	100.00%	0.3
Abaddon	1	5.56%	20.55	16.44	0	0.00%	0.0	1	100.00%	0.3
Alchemist	6	33.33%	17.81	91.78	3	33.33%	1.0	3	0.00%	1.0
Slark	2	11.11%	16.44	27.40	0	0.00%	0.0	2	50.00%	0.7
Lifestealer	2	11.11%	16.44	27.40	0	0.00%	0.0	2	50.00%	0.7
Underlord	2	11.11%	13.70	38.36	1	0.00%	0.3	1	100.00%	0.3
Bloodseeker	4	22.22%	12.33	86.30	3	0.00%	1.0	1	100.00%	0.3
Lina	2	11.11%	10.96	52.05	0	0.00%	0.0	2	0.00%	0.7
Windranger	2	11.11%	9.59	72.60	2	0.00%	0.7	0	0.00%	0.0
Visage	1	5.56%	8.22	34.25	0	0.00%	0.0	1	0.00%	0.3
Snapfire	2	11.11%	6.85	72.60	2	0.00%	0.7	0	0.00%	0.0
Anti-Mage	1	5.56%	5.48	46.58	1	0.00%	0.3	0	0.00%	0.0
Phoenix	1	5.56%	5.48	46.58	1	0.00%	0.3	0	0.00%	0.0
Shadow Shaman	3	16.67%	2.74	84.93	1	0.00%	0.3	2	0.00%	0.7
Riki	1	5.56%	1.37	46.58	1	0.00%	0.3	0	0.00%	0.0