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): 1 - Matches: 16

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

Balance rank	Winrate	Pickrate	Contest Rate
44.3	23.6	59.1	76.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Omniknight	6	37.50%	100.00	2.02	4	100.00%	0.8	2	100.00%	2.0
Naga Siren	4	25.00%	98.99	1.01	2	100.00%	0.4	2	100.00%	2.0
Mirana	5	31.25%	97.98	29.29	3	100.00%	0.6	2	50.00%	2.0
Outworld Destroyer	3	18.75%	96.97	22.22	2	100.00%	0.4	1	100.00%	1.0
Rubick	5	31.25%	95.96	33.33	5	80.00%	1.0	0	0.00%	0.0
Undying	6	37.50%	94.95	34.34	3	100.00%	0.6	3	33.33%	3.0
Pudge	3	18.75%	93.94	15.15	1	100.00%	0.2	2	100.00%	2.0
Night Stalker	3	18.75%	92.93	12.12	0	0.00%	0.0	3	100.00%	3.0
Slark	2	12.50%	91.92	9.09	2	100.00%	0.4	0	0.00%	0.0
Razor	2	12.50%	91.92	3.03	2	100.00%	0.4	0	0.00%	0.0
Enigma	2	12.50%	91.92	11.11	2	100.00%	0.4	0	0.00%	0.0
Spirit Breaker	2	12.50%	91.92	24.24	2	100.00%	0.4	0	0.00%	0.0
Ogre Magi	5	31.25%	87.88	50.51	4	75.00%	0.8	1	0.00%	1.0
Chen	2	12.50%	86.87	28.28	1	100.00%	0.2	1	100.00%	1.0
Phoenix	2	12.50%	86.87	28.28	1	100.00%	0.2	1	100.00%	1.0
Medusa	2	12.50%	86.87	28.28	1	100.00%	0.2	1	100.00%	1.0
Venomancer	2	12.50%	86.87	28.28	1	100.00%	0.2	1	100.00%	1.0
Viper	5	31.25%	82.83	55.56	3	66.67%	0.6	2	50.00%	2.0
Clockwerk	4	25.00%	81.82	38.38	2	50.00%	0.4	2	100.00%	2.0
Vengeful Spirit	4	25.00%	80.81	39.39	2	100.00%	0.4	2	0.00%	2.0
Magnus	3	18.75%	79.80	30.30	1	100.00%	0.2	2	50.00%	2.0
Tiny	3	18.75%	78.79	37.37	3	66.67%	0.6	0	0.00%	0.0
Ancient Apparition	3	18.75%	78.79	37.37	3	66.67%	0.6	0	0.00%	0.0
Treant Protector	3	18.75%	78.79	37.37	3	66.67%	0.6	0	0.00%	0.0
Jakiro	4	25.00%	75.76	57.58	3	66.67%	0.6	1	0.00%	1.0
Chaos Knight	4	25.00%	75.76	57.58	3	66.67%	0.6	1	0.00%	1.0
Io	4	25.00%	73.74	49.49	1	100.00%	0.2	3	33.33%	3.0
Sniper	4	25.00%	73.74	49.49	1	100.00%	0.2	3	33.33%	3.0
Winter Wyvern	4	25.00%	73.74	49.49	1	100.00%	0.2	3	33.33%	3.0
Batrider	7	43.75%	70.71	86.87	3	0.00%	0.6	4	100.00%	4.0
Sand King	3	18.75%	69.70	41.41	2	50.00%	0.4	1	100.00%	1.0
Underlord	3	18.75%	69.70	41.41	2	50.00%	0.4	1	100.00%	1.0
Broodmother	3	18.75%	67.68	32.32	0	0.00%	0.0	3	66.67%	3.0
Warlock	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Ursa	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Luna	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Visage	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Centaur Warrunner	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Tusk	1	6.25%	66.67	21.21	1	100.00%	0.2	0	0.00%	0.0
Terrorblade	1	6.25%	66.67	14.14	1	100.00%	0.2	0	0.00%	0.0
Death Prophet	1	6.25%	66.67	23.23	1	100.00%	0.2	0	0.00%	0.0
Windranger	1	6.25%	66.67	14.14	1	100.00%	0.2	0	0.00%	0.0
Shadow Shaman	1	6.25%	66.67	10.10	1	100.00%	0.2	0	0.00%	0.0
Lifestealer	1	6.25%	66.67	8.08	1	100.00%	0.2	0	0.00%	0.0
Lion	1	6.25%	66.67	8.08	1	100.00%	0.2	0	0.00%	0.0
Juggernaut	6	37.50%	54.55	89.90	6	33.33%	1.2	0	0.00%	0.0
Dark Seer	4	25.00%	53.54	77.78	3	33.33%	0.6	1	100.00%	1.0
Slardar	4	25.00%	53.54	77.78	3	33.33%	0.6	1	100.00%	1.0
Pugna	2	12.50%	51.52	31.31	1	100.00%	0.2	1	0.00%	1.0
Lich	5	31.25%	50.51	85.86	1	0.00%	0.2	4	50.00%	4.0
Legion Commander	2	12.50%	49.49	46.46	2	50.00%	0.4	0	0.00%	0.0
Silencer	2	12.50%	49.49	46.46	2	50.00%	0.4	0	0.00%	0.0
Faceless Void	2	12.50%	49.49	46.46	2	50.00%	0.4	0	0.00%	0.0
Enchantress	1	6.25%	46.46	6.06	0	0.00%	0.0	1	100.00%	1.0
Timbersaw	1	6.25%	46.46	6.06	0	0.00%	0.0	1	100.00%	1.0
Pangolier	1	6.25%	46.46	6.06	0	0.00%	0.0	1	100.00%	1.0
Spectre	3	18.75%	43.43	75.76	2	50.00%	0.4	1	0.00%	1.0
Phantom Lancer	3	18.75%	43.43	75.76	2	50.00%	0.4	1	0.00%	1.0
Queen of Pain	3	18.75%	43.43	75.76	2	50.00%	0.4	1	0.00%	1.0
Sven	3	18.75%	40.40	81.82	3	33.33%	0.6	0	0.00%	0.0
Gyrocopter	3	18.75%	40.40	81.82	3	33.33%	0.6	0	0.00%	0.0
Dark Willow	3	18.75%	38.38	72.73	0	0.00%	0.0	3	33.33%	3.0
Doom	2	12.50%	37.37	54.55	1	0.00%	0.2	1	100.00%	1.0
Drow Ranger	2	12.50%	37.37	54.55	1	0.00%	0.2	1	100.00%	1.0
Shadow Demon	2	12.50%	37.37	54.55	1	0.00%	0.2	1	100.00%	1.0
Clinkz	2	12.50%	37.37	54.55	1	0.00%	0.2	1	100.00%	1.0
Brewmaster	5	31.25%	33.33	94.95	1	0.00%	0.2	4	25.00%	4.0
Earth Spirit	4	25.00%	32.32	93.94	3	0.00%	0.6	1	100.00%	1.0
Phantom Assassin	2	12.50%	31.31	84.85	1	0.00%	0.2	1	0.00%	1.0
Puck	2	12.50%	31.31	84.85	1	0.00%	0.2	1	0.00%	1.0
Monkey King	2	12.50%	31.31	84.85	1	0.00%	0.2	1	0.00%	1.0
Storm Spirit	1	6.25%	28.28	71.72	1	0.00%	0.2	0	0.00%	0.0
Shadow Fiend	1	6.25%	28.28	71.72	1	0.00%	0.2	0	0.00%	0.0
Tinker	3	18.75%	26.26	96.97	2	0.00%	0.4	1	0.00%	1.0
Witch Doctor	1	6.25%	25.25	71.72	1	0.00%	0.2	0	0.00%	0.0
Dazzle	5	31.25%	24.24	100.00	5	0.00%	1.0	0	0.00%	0.0
Crystal Maiden	1	6.25%	23.23	71.72	1	0.00%	0.2	0	0.00%	0.0
Zeus	1	6.25%	23.23	71.72	1	0.00%	0.2	0	0.00%	0.0
Riki	1	6.25%	23.23	71.72	1	0.00%	0.2	0	0.00%	0.0
Lina	1	6.25%	23.23	71.72	1	0.00%	0.2	0	0.00%	0.0
Bounty Hunter	1	6.25%	19.19	43.43	0	0.00%	0.0	1	0.00%	1.0
Weaver	1	6.25%	18.18	71.72	1	0.00%	0.2	0	0.00%	0.0
Axe	1	6.25%	18.18	71.72	1	0.00%	0.2	0	0.00%	0.0
Tidehunter	3	18.75%	16.16	98.99	3	0.00%	0.6	0	0.00%	0.0
Necrophos	1	6.25%	15.15	71.72	1	0.00%	0.2	0	0.00%	0.0
Elder Titan	1	6.25%	15.15	71.72	1	0.00%	0.2	0	0.00%	0.0
Lone Druid	3	18.75%	13.13	92.93	1	0.00%	0.2	2	0.00%	2.0
Disruptor	1	6.25%	12.12	71.72	1	0.00%	0.2	0	0.00%	0.0
Huskar	1	6.25%	12.12	71.72	1	0.00%	0.2	0	0.00%	0.0
Nyx Assassin	3	18.75%	10.10	92.93	1	0.00%	0.2	2	0.00%	2.0
Invoker	2	12.50%	9.09	87.88	2	0.00%	0.4	0	0.00%	0.0
Ember Spirit	1	6.25%	8.08	71.72	1	0.00%	0.2	0	0.00%	0.0
Beastmaster	1	6.25%	7.07	43.43	0	0.00%	0.0	1	0.00%	1.0
Bane	3	18.75%	6.06	96.97	2	0.00%	0.4	1	0.00%	1.0
Techies	2	12.50%	5.05	79.80	0	0.00%	0.0	2	0.00%	2.0
Anti-Mage	2	12.50%	5.05	79.80	0	0.00%	0.0	2	0.00%	2.0
Bloodseeker	3	18.75%	3.03	92.93	1	0.00%	0.2	2	0.00%	2.0
Kunkka	3	18.75%	2.02	98.99	3	0.00%	0.6	0	0.00%	0.0
Earthshaker	2	12.50%	1.01	89.90	2	0.00%	0.4	0	0.00%	0.0