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): 4 - Matches: 65

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

Balance rank	Winrate	Pickrate	Contest Rate
62.1	87.3	39.6	31.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Alchemist	37	56.92%	100.00	54.55	9	66.67%	2.3	28	71.43%	7.0
Dazzle	39	60.00%	98.86	61.36	26	73.08%	6.5	13	46.15%	3.3
Terrorblade	51	78.46%	97.73	79.55	22	63.64%	5.5	29	48.28%	7.3
Death Prophet	52	80.00%	96.59	82.95	13	46.15%	3.3	39	61.54%	9.8
Io	52	80.00%	95.45	84.09	14	64.29%	3.5	38	47.37%	9.5
Elder Titan	42	64.62%	94.32	78.41	18	55.56%	4.5	24	54.17%	6.0
Juggernaut	32	49.23%	93.18	71.59	21	61.90%	5.3	11	45.45%	2.8
Spirit Breaker	6	9.23%	92.05	5.68	4	100.00%	1.0	2	50.00%	0.5
Slardar	35	53.85%	90.91	75.00	16	56.25%	4.0	19	52.63%	4.8
Dark Seer	53	81.54%	89.77	90.91	20	60.00%	5.0	33	36.36%	8.3
Beastmaster	59	90.77%	88.64	96.59	29	44.83%	7.3	30	50.00%	7.5
Timbersaw	51	78.46%	87.50	92.05	31	45.16%	7.8	20	55.00%	5.0
Earth Spirit	57	87.69%	86.36	98.86	29	41.38%	7.3	28	53.57%	7.0
Tinker	31	47.69%	85.23	73.86	8	37.50%	2.0	23	65.22%	5.8
Sven	20	30.77%	84.09	57.95	8	75.00%	2.0	12	41.67%	3.0
Lone Druid	23	35.38%	82.95	64.77	10	70.00%	2.5	13	38.46%	3.3
Axe	12	18.46%	81.82	43.18	9	66.67%	2.3	3	66.67%	0.8
Tidehunter	38	58.46%	80.68	85.23	16	50.00%	4.0	22	45.45%	5.5
Riki	32	49.23%	79.55	80.68	12	41.67%	3.0	20	60.00%	5.0
Batrider	31	47.69%	78.41	81.82	19	47.37%	4.8	12	58.33%	3.0
Faceless Void	46	70.77%	77.27	97.73	19	47.37%	4.8	27	37.04%	6.8
Shadow Demon	16	24.62%	76.14	59.09	10	70.00%	2.5	6	16.67%	1.5
Slark	33	50.77%	75.00	87.50	14	42.86%	3.5	19	47.37%	4.8
Ember Spirit	19	29.23%	73.86	69.32	10	50.00%	2.5	9	55.56%	2.3
Disruptor	35	53.85%	72.73	93.18	22	36.36%	5.5	13	61.54%	3.3
Bristleback	3	4.62%	71.59	4.55	2	100.00%	0.5	1	100.00%	0.3
Winter Wyvern	11	16.92%	70.45	51.14	10	60.00%	2.5	1	0.00%	0.3
Witch Doctor	12	18.46%	69.32	55.68	8	62.50%	2.0	4	25.00%	1.0
Luna	6	9.23%	68.18	10.23	2	100.00%	0.5	4	50.00%	1.0
Bane	6	9.23%	67.05	21.59	4	75.00%	1.0	2	50.00%	0.5
Puck	9	13.85%	65.91	39.77	4	75.00%	1.0	5	40.00%	1.3
Brewmaster	4	6.15%	64.77	7.95	2	100.00%	0.5	2	50.00%	0.5
Doom	4	6.15%	64.77	7.95	2	100.00%	0.5	2	50.00%	0.5
Rubick	12	18.46%	62.50	63.64	12	50.00%	3.0	0	0.00%	0.0
Ursa	7	10.77%	61.36	37.50	6	66.67%	1.5	1	0.00%	0.3
Vengeful Spirit	29	44.62%	60.23	94.32	21	38.10%	5.3	8	37.50%	2.0
Invoker	32	49.23%	59.09	100.00	18	33.33%	4.5	14	42.86%	3.5
Lifestealer	23	35.38%	57.95	86.36	10	30.00%	2.5	13	53.85%	3.3
Weaver	8	12.31%	56.82	42.05	4	50.00%	1.0	4	75.00%	1.0
Medusa	12	18.46%	55.68	60.23	4	25.00%	1.0	8	75.00%	2.0
Phoenix	13	20.00%	54.55	65.91	6	33.33%	1.5	7	71.43%	1.8
Magnus	7	10.77%	53.41	36.36	3	66.67%	0.8	4	50.00%	1.0
Anti-Mage	5	7.69%	52.27	23.86	3	66.67%	0.8	2	50.00%	0.5
Nature's Prophet	5	7.69%	52.27	23.86	3	66.67%	0.8	2	50.00%	0.5
Dragon Knight	10	15.38%	50.00	67.05	8	50.00%	2.0	2	0.00%	0.5
Keeper of the Light	2	3.08%	48.86	2.27	1	100.00%	0.3	1	100.00%	0.3
Templar Assassin	8	12.31%	47.73	45.45	4	50.00%	1.0	4	50.00%	1.0
Broodmother	16	24.62%	46.59	77.27	2	50.00%	0.5	14	35.71%	3.5
Lion	19	29.23%	45.45	95.45	16	31.25%	4.0	3	33.33%	0.8
Enchantress	5	7.69%	44.32	28.41	2	50.00%	0.5	3	66.67%	0.8
Lich	4	6.15%	43.18	27.27	3	66.67%	0.8	1	0.00%	0.3
Necrophos	4	6.15%	43.18	27.27	3	66.67%	0.8	1	0.00%	0.3
Night Stalker	12	18.46%	40.91	76.14	5	20.00%	1.3	7	57.14%	1.8
Ancient Apparition	5	7.69%	39.77	38.64	3	33.33%	0.8	2	100.00%	0.5
Earthshaker	8	12.31%	38.64	70.45	6	33.33%	1.5	2	50.00%	0.5
Undying	3	4.62%	37.50	14.77	2	50.00%	0.5	1	100.00%	0.3
Lina	3	4.62%	37.50	14.77	2	50.00%	0.5	1	100.00%	0.3
Chaos Knight	3	4.62%	37.50	14.77	2	50.00%	0.5	1	100.00%	0.3
Zeus	3	4.62%	37.50	14.77	2	50.00%	0.5	1	100.00%	0.3
Ogre Magi	1	1.54%	32.95	1.14	1	100.00%	0.3	0	0.00%	0.0
Shadow Shaman	1	1.54%	32.95	3.41	1	100.00%	0.3	0	0.00%	0.0
Oracle	12	18.46%	30.68	89.77	10	30.00%	2.5	2	0.00%	0.5
Spectre	4	6.15%	29.55	44.32	3	33.33%	0.8	1	100.00%	0.3
Pugna	2	3.08%	28.41	9.09	1	100.00%	0.3	1	0.00%	0.3
Queen of Pain	6	9.23%	27.27	53.41	2	50.00%	0.5	4	25.00%	1.0
Clinkz	5	7.69%	26.14	50.00	3	33.33%	0.8	2	50.00%	0.5
Bounty Hunter	7	10.77%	25.00	68.18	3	33.33%	0.8	4	25.00%	1.0
Sand King	2	3.08%	23.86	20.45	2	50.00%	0.5	0	0.00%	0.0
Storm Spirit	2	3.08%	23.86	20.45	2	50.00%	0.5	0	0.00%	0.0
Skywrath Mage	2	3.08%	23.86	20.45	2	50.00%	0.5	0	0.00%	0.0
Morphling	6	9.23%	20.45	72.73	5	20.00%	1.3	1	100.00%	0.3
Nyx Assassin	4	6.15%	19.32	56.82	3	33.33%	0.8	1	0.00%	0.3
Tiny	8	12.31%	18.18	88.64	4	25.00%	1.0	4	0.00%	1.0
Lycan	2	3.08%	17.05	25.00	1	0.00%	0.3	1	100.00%	0.3
Wraith King	3	4.62%	15.91	52.27	2	0.00%	0.5	1	100.00%	0.3
Shadow Fiend	1	1.54%	14.77	35.23	1	0.00%	0.3	0	0.00%	0.0
Razor	1	1.54%	14.77	35.23	1	0.00%	0.3	0	0.00%	0.0
Kunkka	1	1.54%	14.77	35.23	1	0.00%	0.3	0	0.00%	0.0
Phantom Assassin	1	1.54%	14.77	35.23	1	0.00%	0.3	0	0.00%	0.0
Treant Protector	1	1.54%	14.77	35.23	1	0.00%	0.3	0	0.00%	0.0
Leshrac	2	3.08%	9.09	48.86	1	0.00%	0.3	1	0.00%	0.3
Omniknight	1	1.54%	7.95	35.23	1	0.00%	0.3	0	0.00%	0.0
Viper	1	1.54%	6.82	17.05	0	0.00%	0.0	1	0.00%	0.3
Enigma	2	3.08%	5.68	62.50	2	0.00%	0.5	0	0.00%	0.0
Huskar	2	3.08%	4.55	48.86	1	0.00%	0.3	1	0.00%	0.3
Naga Siren	2	3.08%	3.41	40.91	0	0.00%	0.0	2	0.00%	0.5
Crystal Maiden	2	3.08%	2.27	48.86	1	0.00%	0.3	1	0.00%	0.3
Legion Commander	1	1.54%	1.14	17.05	0	0.00%	0.0	1	0.00%	0.3