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): 6 - Matches: 77

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

Balance rank	Winrate	Pickrate	Contest Rate
67.1	84.1	53.8	42.9

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Tidehunter	26	33.77%	100.00	28.18	8	87.50%	1.6	18	66.67%	3.0
Keeper of the Light	63	81.82%	99.09	74.55	23	65.22%	4.6	40	57.50%	6.7
Enchantress	22	28.57%	98.18	29.09	10	70.00%	2.0	12	83.33%	2.0
Beastmaster	58	75.32%	97.27	78.18	18	66.67%	3.6	40	52.50%	6.7
Void Spirit	54	70.13%	96.36	79.09	32	65.63%	6.4	22	31.82%	3.7
Puck	69	89.61%	95.45	90.00	33	51.52%	6.6	36	55.56%	6.0
Clockwerk	14	18.18%	94.55	15.45	11	72.73%	2.2	3	100.00%	0.5
Earthshaker	42	54.55%	93.64	70.91	20	65.00%	4.0	22	50.00%	3.7
Nyx Assassin	63	81.82%	92.73	91.82	19	63.16%	3.8	44	40.91%	7.3
Phantom Assassin	31	40.26%	91.82	60.00	13	53.85%	2.6	18	66.67%	3.0
Viper	33	42.86%	90.91	64.55	10	60.00%	2.0	23	56.52%	3.8
Phantom Lancer	17	22.08%	90.00	35.45	5	60.00%	1.0	12	75.00%	2.0
Juggernaut	28	36.36%	89.09	56.36	9	66.67%	1.8	19	52.63%	3.2
Tusk	12	15.58%	88.18	17.27	9	66.67%	1.8	3	100.00%	0.5
Slark	20	25.97%	87.27	46.36	5	80.00%	1.0	15	53.33%	2.5
Bloodseeker	40	51.95%	86.36	81.82	16	56.25%	3.2	24	45.83%	4.0
Io	45	58.44%	85.45	86.36	15	53.33%	3.0	30	46.67%	5.0
Elder Titan	4	5.19%	84.55	0.91	3	100.00%	0.6	1	100.00%	0.2
Wraith King	30	38.96%	83.64	73.64	16	56.25%	3.2	14	50.00%	2.3
Mars	24	31.17%	82.73	58.18	10	50.00%	2.0	14	64.29%	2.3
Dragon Knight	20	25.97%	81.82	50.91	11	54.55%	2.2	9	66.67%	1.5
Lion	19	24.68%	80.91	52.73	18	55.56%	3.6	1	100.00%	0.2
Troll Warlord	38	49.35%	80.00	84.55	11	54.55%	2.2	27	44.44%	4.5
Morphling	48	62.34%	79.09	94.55	7	42.86%	1.4	41	46.34%	6.8
Earth Spirit	43	55.84%	78.18	92.73	29	44.83%	5.8	14	50.00%	2.3
Leshrac	10	12.99%	77.27	13.64	4	75.00%	0.8	6	66.67%	1.0
Grimstroke	37	48.05%	76.36	87.27	20	40.00%	4.0	17	64.71%	2.8
Weaver	16	20.78%	75.45	48.18	7	71.43%	1.4	9	44.44%	1.5
Timbersaw	41	53.25%	74.55	89.09	13	46.15%	2.6	28	46.43%	4.7
Outworld Destroyer	21	27.27%	73.64	53.64	6	50.00%	1.2	15	60.00%	2.5
Enigma	31	40.26%	72.73	80.91	14	50.00%	2.8	17	47.06%	2.8
Monkey King	50	64.94%	71.82	97.27	18	38.89%	3.6	32	46.88%	5.3
Invoker	26	33.77%	70.91	72.73	7	57.14%	1.4	19	47.37%	3.2
Lone Druid	16	20.78%	70.00	47.27	4	75.00%	0.8	12	50.00%	2.0
Bristleback	21	27.27%	69.09	57.27	5	60.00%	1.0	16	50.00%	2.7
Nature's Prophet	36	46.75%	68.18	90.91	18	44.44%	3.6	18	44.44%	3.0
Lycan	41	53.25%	67.27	93.64	5	20.00%	1.0	36	50.00%	6.0
Oracle	21	27.27%	66.36	66.36	10	50.00%	2.0	11	54.55%	1.8
Riki	21	27.27%	65.45	70.00	7	42.86%	1.4	14	57.14%	2.3
Razor	10	12.99%	64.55	32.73	6	83.33%	1.2	4	0.00%	0.7
Ursa	37	48.05%	63.64	96.36	19	31.58%	3.8	18	55.56%	3.0
Dark Willow	6	7.79%	62.73	14.55	6	66.67%	1.2	0	0.00%	0.0
Batrider	56	72.73%	61.82	100.00	10	10.00%	2.0	46	43.48%	7.7
Death Prophet	42	54.55%	60.91	99.09	19	42.11%	3.8	23	26.09%	3.8
Windranger	3	3.90%	60.00	1.82	1	100.00%	0.2	2	100.00%	0.3
Ember Spirit	21	27.27%	59.09	80.00	11	45.45%	2.2	10	40.00%	1.7
Pangolier	23	29.87%	58.18	85.45	13	38.46%	2.6	10	50.00%	1.7
Chen	10	12.99%	57.27	41.82	4	75.00%	0.8	6	33.33%	1.0
Kunkka	10	12.99%	57.27	41.82	4	75.00%	0.8	6	33.33%	1.0
Phoenix	15	19.48%	55.45	62.73	8	37.50%	1.6	7	71.43%	1.2
Venomancer	7	9.09%	54.55	12.73	2	100.00%	0.4	5	40.00%	0.8
Storm Spirit	18	23.38%	53.64	71.82	4	75.00%	0.8	14	28.57%	2.3
Lifestealer	6	7.79%	52.73	11.82	3	66.67%	0.6	3	66.67%	0.5
Dark Seer	24	31.17%	51.82	88.18	12	33.33%	2.4	12	50.00%	2.0
Crystal Maiden	14	18.18%	50.91	65.45	8	37.50%	1.6	6	66.67%	1.0
Alchemist	19	24.68%	50.00	83.64	9	33.33%	1.8	10	50.00%	1.7
Undying	11	14.29%	49.09	51.82	6	50.00%	1.2	5	40.00%	0.8
Anti-Mage	14	18.18%	48.18	61.82	2	0.00%	0.4	12	58.33%	2.0
Broodmother	8	10.39%	47.27	30.00	1	100.00%	0.2	7	42.86%	1.2
Huskar	2	2.60%	46.36	4.55	1	100.00%	0.2	1	100.00%	0.2
Gyrocopter	10	12.99%	45.45	54.55	6	33.33%	1.2	4	75.00%	0.7
Rubick	19	24.68%	44.55	95.45	18	33.33%	3.6	1	0.00%	0.2
Medusa	15	19.48%	43.64	77.27	3	33.33%	0.6	12	41.67%	2.0
Witch Doctor	6	7.79%	42.73	26.36	3	66.67%	0.6	3	33.33%	0.5
Shadow Shaman	9	11.69%	41.82	59.09	8	37.50%	1.6	1	100.00%	0.2
Terrorblade	6	7.79%	40.91	38.18	4	50.00%	0.8	2	50.00%	0.3
Brewmaster	11	14.29%	40.00	76.36	6	16.67%	1.2	5	80.00%	0.8
Shadow Demon	12	15.58%	39.09	82.73	7	14.29%	1.4	5	80.00%	0.8
Winter Wyvern	4	5.19%	38.18	27.27	4	50.00%	0.8	0	0.00%	0.0
Slardar	6	7.79%	37.27	42.73	3	33.33%	0.6	3	66.67%	0.5
Abaddon	9	11.69%	36.36	68.18	5	40.00%	1.0	4	25.00%	0.7
Sand King	3	3.90%	35.45	8.18	2	50.00%	0.4	1	100.00%	0.2
Bane	1	1.30%	34.55	3.64	1	100.00%	0.2	0	0.00%	0.0
Vengeful Spirit	1	1.30%	34.55	3.64	1	100.00%	0.2	0	0.00%	0.0
Legion Commander	5	6.49%	32.73	16.36	1	0.00%	0.2	4	75.00%	0.7
Naga Siren	9	11.69%	31.82	67.27	3	0.00%	0.6	6	66.67%	1.0
Pugna	6	7.79%	30.91	40.00	1	0.00%	0.2	5	60.00%	0.8
Shadow Fiend	8	10.39%	30.00	63.64	4	25.00%	0.8	4	50.00%	0.7
Doom	5	6.49%	29.09	37.27	2	50.00%	0.4	3	33.33%	0.5
Tiny	7	9.09%	28.18	60.91	5	40.00%	1.0	2	0.00%	0.3
Luna	4	5.19%	27.27	34.55	3	33.33%	0.6	1	100.00%	0.2
Treant Protector	4	5.19%	27.27	34.55	3	33.33%	0.6	1	100.00%	0.2
Drow Ranger	6	7.79%	25.45	49.09	2	50.00%	0.4	4	25.00%	0.7
Underlord	9	11.69%	24.55	75.45	2	0.00%	0.4	7	42.86%	1.2
Zeus	2	2.60%	23.64	10.91	2	50.00%	0.4	0	0.00%	0.0
Lina	1	1.30%	22.73	7.27	0	0.00%	0.0	1	100.00%	0.2
Silencer	1	1.30%	22.73	7.27	0	0.00%	0.0	1	100.00%	0.2
Disruptor	1	1.30%	22.73	7.27	0	0.00%	0.0	1	100.00%	0.2
Clinkz	3	3.90%	20.00	25.45	2	50.00%	0.4	1	0.00%	0.2
Mirana	5	6.49%	19.09	50.00	2	50.00%	0.4	3	0.00%	0.5
Bounty Hunter	3	3.90%	18.18	39.09	3	33.33%	0.6	0	0.00%	0.0
Snapfire	3	3.90%	17.27	36.36	1	0.00%	0.2	2	50.00%	0.3
Axe	3	3.90%	16.36	69.09	2	0.00%	0.4	1	0.00%	0.2
Jakiro	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Magnus	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Lich	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Visage	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Warlock	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Chaos Knight	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Spirit Breaker	1	1.30%	15.45	24.55	1	0.00%	0.2	0	0.00%	0.0
Omniknight	2	2.60%	9.09	45.45	1	0.00%	0.2	1	0.00%	0.2
Skywrath Mage	1	1.30%	8.18	24.55	1	0.00%	0.2	0	0.00%	0.0
Queen of Pain	2	2.60%	7.27	31.82	0	0.00%	0.0	2	0.00%	0.3
Faceless Void	1	1.30%	6.36	10.00	0	0.00%	0.0	1	0.00%	0.2
Spectre	1	1.30%	6.36	10.00	0	0.00%	0.0	1	0.00%	0.2
Templar Assassin	3	3.90%	4.55	55.45	1	0.00%	0.2	2	0.00%	0.3
Arc Warden	2	2.60%	3.64	45.45	1	0.00%	0.2	1	0.00%	0.2
Necrophos	2	2.60%	2.73	31.82	0	0.00%	0.0	2	0.00%	0.3
Sniper	2	2.60%	1.82	45.45	1	0.00%	0.2	1	0.00%	0.2
Ancient Apparition	7	9.09%	0.91	99.09	1	0.00%	0.2	6	0.00%	1.0