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): 7 - Matches: 69

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

Balance rank	Winrate	Pickrate	Contest Rate
62.1	81.5	46.3	35.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Death Prophet	63	91.30%	100.00	70.30	24	58.33%	4.8	39	66.67%	5.6
Sand King	62	89.86%	99.01	72.28	28	57.14%	5.6	34	67.65%	4.9
Pangolier	39	56.52%	98.02	50.50	19	63.16%	3.8	20	70.00%	2.9
Keeper of the Light	57	82.61%	97.03	76.24	21	52.38%	4.2	36	66.67%	5.1
Io	58	84.06%	96.04	88.12	19	63.16%	3.8	39	46.15%	5.6
Bane	44	63.77%	95.05	71.29	27	59.26%	5.4	17	52.94%	2.4
Mars	50	72.46%	94.06	85.15	25	56.00%	5.0	25	48.00%	3.6
Troll Warlord	6	8.70%	93.07	0.99	1	100.00%	0.2	5	100.00%	0.7
Necrophos	32	46.38%	92.08	57.43	10	80.00%	2.0	22	40.91%	3.1
Chaos Knight	48	69.57%	91.09	86.14	21	52.38%	4.2	27	51.85%	3.9
Tiny	40	57.97%	90.10	77.23	13	53.85%	2.6	27	55.56%	3.9
Ember Spirit	46	66.67%	89.11	81.19	15	53.33%	3.0	31	51.61%	4.4
Mirana	23	33.33%	88.12	48.51	15	60.00%	3.0	8	62.50%	1.1
Anti-Mage	16	23.19%	87.13	30.69	3	66.67%	0.6	13	69.23%	1.9
Hoodwink	22	31.88%	86.14	52.48	14	57.14%	2.8	8	62.50%	1.1
Viper	23	33.33%	85.15	47.52	4	25.00%	0.8	19	73.68%	2.7
Razor	37	53.62%	84.16	79.21	7	71.43%	1.4	30	40.00%	4.3
Enchantress	48	69.57%	83.17	97.03	25	52.00%	5.0	23	30.43%	3.3
Lina	23	33.33%	82.18	61.39	7	28.57%	1.4	16	75.00%	2.3
Bloodseeker	24	34.78%	81.19	68.32	9	33.33%	1.8	15	73.33%	2.1
Timbersaw	33	47.83%	80.20	84.16	9	66.67%	1.8	24	33.33%	3.4
Shadow Demon	15	21.74%	79.21	41.58	7	57.14%	1.4	8	62.50%	1.1
Rubick	10	14.49%	78.22	22.77	3	66.67%	0.6	7	71.43%	1.0
Batrider	33	47.83%	77.23	87.13	8	37.50%	1.6	25	52.00%	3.6
Faceless Void	23	33.33%	76.24	64.36	4	50.00%	0.8	19	52.63%	2.7
Storm Spirit	33	47.83%	75.25	90.10	8	75.00%	1.6	25	28.00%	3.6
Enigma	8	11.59%	74.26	20.79	5	80.00%	1.0	3	33.33%	0.4
Dragon Knight	35	50.72%	73.27	93.07	18	44.44%	3.6	17	41.18%	2.4
Skywrath Mage	22	31.88%	72.28	73.27	15	53.33%	3.0	7	28.57%	1.0
Abaddon	16	23.19%	71.29	51.49	10	60.00%	2.0	6	33.33%	0.9
Gyrocopter	20	28.99%	70.30	67.33	12	50.00%	2.4	8	50.00%	1.1
Naga Siren	3	4.35%	69.31	6.93	2	100.00%	0.4	1	100.00%	0.1
Invoker	48	69.57%	68.32	100.00	10	20.00%	2.0	38	47.37%	5.4
Underlord	12	17.39%	67.33	37.62	5	80.00%	1.0	7	28.57%	1.0
Medusa	32	46.38%	66.34	92.08	6	33.33%	1.2	26	46.15%	3.7
Pugna	34	49.28%	65.35	98.02	16	43.75%	3.2	18	33.33%	2.6
Beastmaster	19	27.54%	64.36	65.35	6	33.33%	1.2	13	61.54%	1.9
Weaver	23	33.33%	63.37	82.18	16	43.75%	3.2	7	42.86%	1.0
Templar Assassin	31	44.93%	62.38	95.05	11	36.36%	2.2	20	45.00%	2.9
Queen of Pain	8	11.59%	61.39	24.75	3	33.33%	0.6	5	100.00%	0.7
Clockwerk	15	21.74%	60.40	62.38	10	40.00%	2.0	5	80.00%	0.7
Monkey King	36	52.17%	59.41	99.01	13	38.46%	2.6	23	34.78%	3.3
Axe	4	5.80%	58.42	8.91	2	100.00%	0.4	2	50.00%	0.3
Legion Commander	4	5.80%	58.42	8.91	2	100.00%	0.4	2	50.00%	0.3
Leshrac	9	13.04%	56.44	32.67	3	66.67%	0.6	6	50.00%	0.9
Terrorblade	18	26.09%	55.45	74.26	7	42.86%	1.4	11	45.45%	1.6
Huskar	26	37.68%	54.46	96.04	9	33.33%	1.8	17	41.18%	2.4
Undying	5	7.25%	53.47	16.83	4	75.00%	0.8	1	0.00%	0.1
Phantom Lancer	7	10.14%	52.48	28.71	3	66.67%	0.6	4	50.00%	0.6
Kunkka	22	31.88%	51.49	91.09	4	50.00%	0.8	18	33.33%	2.6
Tidehunter	18	26.09%	50.50	80.20	10	40.00%	2.0	8	37.50%	1.1
Ancient Apparition	7	10.14%	49.50	21.78	1	100.00%	0.2	6	50.00%	0.9
Snapfire	11	15.94%	48.51	56.44	9	44.44%	1.8	2	50.00%	0.3
Grimstroke	13	18.84%	47.52	66.34	8	50.00%	1.6	5	20.00%	0.7
Ursa	6	8.70%	46.53	18.81	2	100.00%	0.4	4	25.00%	0.6
Lone Druid	9	13.04%	45.54	39.60	3	33.33%	0.6	6	66.67%	0.9
Phantom Assassin	21	30.43%	44.55	94.06	8	37.50%	1.6	13	30.77%	1.9
Void Spirit	17	24.64%	43.56	89.11	8	37.50%	1.6	9	33.33%	1.3
Chen	10	14.49%	42.57	53.47	4	25.00%	0.8	6	66.67%	0.9
Spirit Breaker	7	10.14%	41.58	35.64	3	66.67%	0.6	4	25.00%	0.6
Crystal Maiden	3	4.35%	40.59	10.89	3	66.67%	0.6	0	0.00%	0.0
Visage	8	11.59%	39.60	49.50	6	50.00%	1.2	2	0.00%	0.3
Venomancer	10	14.49%	38.61	59.41	5	20.00%	1.0	5	80.00%	0.7
Centaur Warrunner	3	4.35%	37.62	9.90	1	100.00%	0.2	2	50.00%	0.3
Jakiro	4	5.80%	36.63	19.80	3	66.67%	0.6	1	0.00%	0.1
Wraith King	13	18.84%	35.64	83.17	8	37.50%	1.6	5	20.00%	0.7
Lich	8	11.59%	34.65	63.37	8	37.50%	1.6	0	0.00%	0.0
Puck	12	17.39%	33.66	69.31	2	50.00%	0.4	10	30.00%	1.4
Lifestealer	4	5.80%	32.67	13.86	1	0.00%	0.2	3	100.00%	0.4
Windranger	4	5.80%	31.68	29.70	4	50.00%	0.8	0	0.00%	0.0
Bristleback	6	8.70%	30.69	36.63	3	66.67%	0.6	3	0.00%	0.4
Luna	12	17.39%	29.70	78.22	4	50.00%	0.8	8	12.50%	1.1
Meepo	1	1.45%	28.71	2.97	1	100.00%	0.2	0	0.00%	0.0
Ogre Magi	1	1.45%	28.71	2.97	1	100.00%	0.2	0	0.00%	0.0
Morphling	5	7.25%	26.73	25.74	1	0.00%	0.2	4	75.00%	0.6
Dark Seer	4	5.80%	25.74	23.76	2	50.00%	0.4	2	50.00%	0.3
Earth Spirit	5	7.25%	24.75	40.59	5	40.00%	1.0	0	0.00%	0.0
Nature's Prophet	5	7.25%	23.76	33.66	2	50.00%	0.4	3	33.33%	0.4
Shadow Shaman	7	10.14%	22.77	58.42	5	20.00%	1.0	2	100.00%	0.3
Juggernaut	7	10.14%	21.78	60.40	3	0.00%	0.6	4	75.00%	0.6
Slardar	3	4.35%	20.79	15.84	1	0.00%	0.2	2	100.00%	0.3
Dark Willow	5	7.25%	19.80	44.55	4	25.00%	0.8	1	100.00%	0.1
Tusk	6	8.70%	18.81	55.45	4	25.00%	0.8	2	50.00%	0.3
Nyx Assassin	2	2.90%	17.82	14.85	2	50.00%	0.4	0	0.00%	0.0
Outworld Destroyer	1	1.45%	16.83	5.94	0	0.00%	0.0	1	100.00%	0.1
Sven	1	1.45%	16.83	5.94	0	0.00%	0.0	1	100.00%	0.1
Slark	1	1.45%	16.83	5.94	0	0.00%	0.0	1	100.00%	0.1
Omniknight	5	7.25%	13.86	43.56	2	0.00%	0.4	3	66.67%	0.4
Vengeful Spirit	3	4.35%	12.87	34.65	3	33.33%	0.6	0	0.00%	0.0
Lycan	2	2.90%	11.88	17.82	1	0.00%	0.2	1	100.00%	0.1
Techies	2	2.90%	10.89	46.53	2	0.00%	0.4	0	0.00%	0.0
Dazzle	2	2.90%	9.90	38.61	1	0.00%	0.2	1	0.00%	0.1
Brewmaster	2	2.90%	8.91	46.53	2	0.00%	0.4	0	0.00%	0.0
Phoenix	2	2.90%	7.92	31.68	0	0.00%	0.0	2	0.00%	0.3
Shadow Fiend	1	1.45%	6.93	27.72	1	0.00%	0.2	0	0.00%	0.0
Elder Titan	1	1.45%	6.93	27.72	1	0.00%	0.2	0	0.00%	0.0
Winter Wyvern	3	4.35%	4.95	75.25	3	0.00%	0.6	0	0.00%	0.0
Oracle	3	4.35%	3.96	54.46	1	0.00%	0.2	2	0.00%	0.3
Night Stalker	1	1.45%	2.97	12.87	0	0.00%	0.0	1	0.00%	0.1
Broodmother	3	4.35%	1.98	42.57	0	0.00%	0.0	3	0.00%	0.4
Doom	1	1.45%	0.99	12.87	0	0.00%	0.0	1	0.00%	0.1