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: 64

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

Balance rank	Winrate	Pickrate	Contest Rate
62.9	79.7	49.6	38.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Bane	52	81.25%	100.00	63.21	33	69.70%	8.3	19	42.11%	3.2
Queen of Pain	52	81.25%	99.06	67.92	26	57.69%	6.5	26	69.23%	4.3
Outworld Destroyer	31	48.44%	98.11	52.83	9	88.89%	2.3	22	50.00%	3.7
Dark Seer	15	23.44%	97.17	30.19	7	85.71%	1.8	8	62.50%	1.3
Beastmaster	54	84.38%	96.23	87.74	10	40.00%	2.5	44	59.09%	7.3
Treant Protector	14	21.88%	95.28	34.91	9	77.78%	2.3	5	60.00%	0.8
Kunkka	41	64.06%	94.34	74.53	19	57.89%	4.8	22	54.55%	3.7
Templar Assassin	30	46.88%	93.40	56.60	6	83.33%	1.5	24	50.00%	4.0
Razor	46	71.88%	92.45	86.79	18	61.11%	4.5	28	42.86%	4.7
Phantom Assassin	33	51.56%	91.51	66.04	13	69.23%	3.3	20	40.00%	3.3
Tidehunter	29	45.31%	90.57	61.32	11	72.73%	2.8	18	38.89%	3.0
Puck	39	60.94%	89.62	83.02	17	47.06%	4.3	22	59.09%	3.7
Mirana	7	10.94%	88.68	15.09	5	100.00%	1.3	2	0.00%	0.3
Ember Spirit	26	40.63%	87.74	59.43	9	55.56%	2.3	17	58.82%	2.8
Lina	31	48.44%	86.79	70.75	8	37.50%	2.0	23	65.22%	3.8
Weaver	50	78.13%	85.85	93.40	21	38.10%	5.3	29	58.62%	4.8
Lycan	10	15.63%	84.91	23.58	2	100.00%	0.5	8	62.50%	1.3
Snapfire	33	51.56%	83.96	84.91	23	52.17%	5.8	10	40.00%	1.7
Invoker	47	73.44%	83.02	94.34	17	47.06%	4.3	30	43.33%	5.0
Void Spirit	12	18.75%	82.08	45.28	6	66.67%	1.5	6	66.67%	1.0
Leshrac	9	14.06%	81.13	22.64	3	100.00%	0.8	6	50.00%	1.0
Spirit Breaker	48	75.00%	80.19	95.28	23	34.78%	5.8	25	60.00%	4.2
Io	60	93.75%	79.25	100.00	17	29.41%	4.3	43	48.84%	7.2
Wraith King	34	53.13%	78.30	88.68	17	47.06%	4.3	17	47.06%	2.8
Timbersaw	31	48.44%	77.36	81.13	8	50.00%	2.0	23	47.83%	3.8
Earth Spirit	3	4.69%	76.42	9.43	3	100.00%	0.8	0	0.00%	0.0
Mars	44	68.75%	75.47	98.11	17	41.18%	4.3	27	40.74%	4.5
Ursa	15	23.44%	74.53	51.89	4	50.00%	1.0	11	63.64%	1.8
Luna	33	51.56%	73.58	91.51	13	23.08%	3.3	20	70.00%	3.3
Morphling	24	37.50%	72.64	73.58	3	0.00%	0.8	21	61.90%	3.5
Nyx Assassin	28	43.75%	71.70	90.57	16	50.00%	4.0	12	25.00%	2.0
Legion Commander	14	21.88%	70.75	50.94	2	50.00%	0.5	12	58.33%	2.0
Faceless Void	23	35.94%	69.81	78.30	5	60.00%	1.3	18	38.89%	3.0
Night Stalker	24	37.50%	68.87	79.25	7	42.86%	1.8	17	47.06%	2.8
Doom	27	42.19%	67.92	89.62	9	33.33%	2.3	18	50.00%	3.0
Death Prophet	8	12.50%	66.98	35.85	3	66.67%	0.8	5	60.00%	0.8
Dazzle	7	10.94%	66.04	33.96	4	75.00%	1.0	3	33.33%	0.5
Clockwerk	10	15.63%	65.09	54.72	9	55.56%	2.3	1	0.00%	0.2
Grimstroke	15	23.44%	64.15	64.15	11	45.45%	2.8	4	50.00%	0.7
Slardar	16	25.00%	63.21	60.38	3	66.67%	0.8	13	38.46%	2.2
Terrorblade	19	29.69%	62.26	76.42	4	50.00%	1.0	15	40.00%	2.5
Vengeful Spirit	2	3.13%	61.32	5.66	2	100.00%	0.5	0	0.00%	0.0
Jakiro	7	10.94%	60.38	47.17	7	57.14%	1.8	0	0.00%	0.0
Monkey King	29	45.31%	59.43	97.17	11	27.27%	2.8	18	44.44%	3.0
Sand King	7	10.94%	58.49	40.57	3	33.33%	0.8	4	100.00%	0.7
Medusa	16	25.00%	57.55	71.70	5	20.00%	1.3	11	63.64%	1.8
Batrider	16	25.00%	56.60	72.64	3	33.33%	0.8	13	46.15%	2.2
Dark Willow	5	7.81%	55.66	33.02	5	60.00%	1.3	0	0.00%	0.0
Storm Spirit	17	26.56%	54.72	85.85	9	44.44%	2.3	8	25.00%	1.3
Enigma	3	4.69%	53.77	11.32	2	100.00%	0.5	1	0.00%	0.2
Magnus	2	3.13%	52.83	10.38	1	100.00%	0.3	1	100.00%	0.2
Gyrocopter	9	14.06%	51.89	57.55	9	44.44%	2.3	0	0.00%	0.0
Troll Warlord	14	21.88%	50.94	65.09	3	33.33%	0.8	11	45.45%	1.8
Viper	7	10.94%	50.00	44.34	2	50.00%	0.5	5	60.00%	0.8
Shadow Fiend	11	17.19%	49.06	62.26	8	50.00%	2.0	3	0.00%	0.5
Rubick	15	23.44%	48.11	83.96	9	33.33%	2.3	6	50.00%	1.0
Broodmother	15	23.44%	47.17	69.81	0	0.00%	0.0	15	40.00%	2.5
Bloodseeker	14	21.88%	46.23	75.47	4	50.00%	1.0	10	30.00%	1.7
Nature's Prophet	4	6.25%	45.28	17.92	2	50.00%	0.5	2	100.00%	0.3
Abaddon	4	6.25%	45.28	17.92	2	50.00%	0.5	2	100.00%	0.3
Centaur Warrunner	5	7.81%	43.40	41.51	4	50.00%	1.0	1	100.00%	0.2
Shadow Demon	14	21.88%	42.45	82.08	8	37.50%	2.0	6	33.33%	1.0
Lifestealer	5	7.81%	41.51	31.13	2	50.00%	0.5	3	66.67%	0.5
Undying	4	6.25%	40.57	29.25	3	66.67%	0.8	1	0.00%	0.2
Juggernaut	4	6.25%	40.57	29.25	3	66.67%	0.8	1	0.00%	0.2
Dragon Knight	4	6.25%	40.57	29.25	3	66.67%	0.8	1	0.00%	0.2
Disruptor	14	21.88%	37.74	92.45	13	30.77%	3.3	1	0.00%	0.2
Enchantress	11	17.19%	36.79	68.87	3	33.33%	0.8	8	37.50%	1.3
Tusk	4	6.25%	35.85	43.40	4	50.00%	1.0	0	0.00%	0.0
Naga Siren	6	9.38%	34.91	50.00	3	66.67%	0.8	3	0.00%	0.5
Phantom Lancer	6	9.38%	33.96	42.45	0	0.00%	0.0	6	50.00%	1.0
Skywrath Mage	3	4.69%	33.02	18.87	2	50.00%	0.5	1	100.00%	0.2
Witch Doctor	1	1.56%	32.08	4.72	1	100.00%	0.3	0	0.00%	0.0
Bristleback	1	1.56%	32.08	4.72	1	100.00%	0.3	0	0.00%	0.0
Earthshaker	1	1.56%	32.08	4.72	1	100.00%	0.3	0	0.00%	0.0
Clinkz	1	1.56%	32.08	4.72	1	100.00%	0.3	0	0.00%	0.0
Anti-Mage	6	9.38%	28.30	53.77	4	50.00%	1.0	2	0.00%	0.3
Lion	9	14.06%	27.36	80.19	8	25.00%	2.0	1	100.00%	0.2
Sven	3	4.69%	26.42	14.15	0	0.00%	0.0	3	66.67%	0.5
Drow Ranger	7	10.94%	25.47	55.66	1	100.00%	0.3	6	16.67%	1.0
Winter Wyvern	4	6.25%	24.53	46.23	3	33.33%	0.8	1	100.00%	0.2
Chen	2	3.13%	23.58	13.21	1	100.00%	0.3	1	0.00%	0.2
Oracle	2	3.13%	23.58	13.21	1	100.00%	0.3	1	0.00%	0.2
Sniper	3	4.69%	21.70	25.47	1	0.00%	0.3	2	100.00%	0.3
Huskar	3	4.69%	21.70	25.47	1	0.00%	0.3	2	100.00%	0.3
Pudge	2	3.13%	19.81	21.70	2	50.00%	0.5	0	0.00%	0.0
Brewmaster	2	3.13%	19.81	21.70	2	50.00%	0.5	0	0.00%	0.0
Lone Druid	1	1.56%	17.92	0.94	0	0.00%	0.0	1	100.00%	0.2
Phoenix	1	1.56%	17.92	8.49	0	0.00%	0.0	1	100.00%	0.2
Arc Warden	1	1.56%	17.92	8.49	0	0.00%	0.0	1	100.00%	0.2
Axe	1	1.56%	17.92	8.49	0	0.00%	0.0	1	100.00%	0.2
Hoodwink	10	15.63%	14.15	96.23	7	14.29%	1.8	3	33.33%	0.5
Ogre Magi	3	4.69%	13.21	49.06	3	33.33%	0.8	0	0.00%	0.0
Visage	6	9.38%	12.26	66.98	3	33.33%	0.8	3	0.00%	0.5
Windranger	2	3.13%	11.32	16.04	0	0.00%	0.0	2	50.00%	0.3
Pangolier	6	9.38%	10.38	77.36	4	0.00%	1.0	2	100.00%	0.3
Tinker	3	4.69%	9.43	32.08	0	0.00%	0.0	3	33.33%	0.5
Venomancer	2	3.13%	8.49	26.42	1	0.00%	0.3	1	100.00%	0.2
Silencer	3	4.69%	7.55	48.11	1	0.00%	0.3	2	50.00%	0.3
Slark	1	1.56%	6.60	39.62	1	0.00%	0.3	0	0.00%	0.0
Necrophos	1	1.56%	6.60	39.62	1	0.00%	0.3	0	0.00%	0.0
Warlock	1	1.56%	6.60	39.62	1	0.00%	0.3	0	0.00%	0.0
Zeus	1	1.56%	3.77	19.81	0	0.00%	0.0	1	0.00%	0.2
Underlord	7	10.94%	2.83	99.06	3	0.00%	0.8	4	0.00%	0.7
Ancient Apparition	3	4.69%	1.89	58.49	1	0.00%	0.3	2	0.00%	0.3
Keeper of the Light	1	1.56%	0.94	39.62	1	0.00%	0.3	0	0.00%	0.0