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: 74

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

Balance rank	Winrate	Pickrate	Contest Rate
66.3	87.5	46.7	41.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Marci	65	87.84%	100.00	69.23	25	72.00%	5.0	40	50.00%	6.7
Clockwerk	36	48.65%	99.04	40.38	26	69.23%	5.2	10	70.00%	1.7
Zeus	43	58.11%	98.08	55.77	22	72.73%	4.4	21	42.86%	3.5
Lycan	32	43.24%	97.12	39.42	4	50.00%	0.8	28	71.43%	4.7
Monkey King	37	50.00%	96.15	51.92	14	64.29%	2.8	23	60.87%	3.8
Bloodseeker	57	77.03%	95.19	84.62	10	50.00%	2.0	47	57.45%	7.8
Puck	68	91.89%	94.23	97.12	36	50.00%	7.2	32	50.00%	5.3
Winter Wyvern	37	50.00%	93.27	62.50	20	60.00%	4.0	17	52.94%	2.8
Bristleback	33	44.59%	92.31	54.81	12	66.67%	2.4	21	52.38%	3.5
Tiny	57	77.03%	91.35	90.38	27	44.44%	5.4	30	63.33%	5.0
Viper	58	78.38%	90.38	89.42	10	50.00%	2.0	48	52.08%	8.0
Dazzle	12	16.22%	89.42	19.23	8	75.00%	1.6	4	75.00%	0.7
Doom	35	47.30%	88.46	66.35	20	55.00%	4.0	15	60.00%	2.5
Razor	48	64.86%	87.50	87.50	20	65.00%	4.0	28	32.14%	4.7
Phoenix	8	10.81%	86.54	9.62	4	100.00%	0.8	4	50.00%	0.7
Beastmaster	56	75.68%	85.58	94.23	22	50.00%	4.4	34	47.06%	5.7
Void Spirit	29	39.19%	84.62	58.65	13	69.23%	2.6	16	37.50%	2.7
Oracle	10	13.51%	83.65	18.27	5	100.00%	1.0	5	20.00%	0.8
Jakiro	14	18.92%	82.69	35.58	13	61.54%	2.6	1	100.00%	0.2
Chaos Knight	36	48.65%	81.73	83.65	16	56.25%	3.2	20	40.00%	3.3
Alchemist	48	64.86%	80.77	96.15	11	45.45%	2.2	37	45.95%	6.2
Timbersaw	43	58.11%	79.81	91.35	10	50.00%	2.0	33	45.45%	5.5
Leshrac	24	32.43%	78.85	56.73	9	66.67%	1.8	15	40.00%	2.5
Faceless Void	19	25.68%	77.88	43.27	5	60.00%	1.0	14	57.14%	2.3
Dragon Knight	24	32.43%	76.92	61.54	12	58.33%	2.4	12	41.67%	2.0
Keeper of the Light	30	40.54%	75.96	75.00	10	70.00%	2.0	20	30.00%	3.3
Necrophos	15	20.27%	75.00	38.46	7	57.14%	1.4	8	62.50%	1.3
Venomancer	14	18.92%	74.04	32.69	4	50.00%	0.8	10	70.00%	1.7
Lone Druid	16	21.62%	73.08	42.31	5	80.00%	1.0	11	36.36%	1.8
Weaver	22	29.73%	72.12	65.38	10	40.00%	2.0	12	66.67%	2.0
Io	27	36.49%	71.15	77.88	9	44.44%	1.8	18	50.00%	3.0
Night Stalker	23	31.08%	70.19	64.42	5	60.00%	1.0	18	44.44%	3.0
Batrider	36	48.65%	69.23	93.27	11	36.36%	2.2	25	48.00%	4.2
Dawnbreaker	46	62.16%	68.27	98.08	31	38.71%	6.2	15	40.00%	2.5
Slardar	9	12.16%	67.31	26.92	5	60.00%	1.0	4	75.00%	0.7
Enchantress	27	36.49%	66.35	85.58	11	27.27%	2.2	16	68.75%	2.7
Templar Assassin	21	28.38%	65.38	59.62	3	66.67%	0.6	18	44.44%	3.0
Enigma	45	60.81%	64.42	99.04	21	38.10%	4.2	24	37.50%	4.0
Broodmother	4	5.41%	63.46	6.73	0	0.00%	0.0	4	100.00%	0.7
Juggernaut	24	32.43%	62.50	79.81	9	55.56%	1.8	15	33.33%	2.5
Lifestealer	10	13.51%	61.54	31.73	7	57.14%	1.4	3	66.67%	0.5
Bane	11	14.86%	60.58	41.35	11	54.55%	2.2	0	0.00%	0.0
Sniper	22	29.73%	59.62	70.19	6	50.00%	1.2	16	43.75%	2.7
Skywrath Mage	17	22.97%	58.65	60.58	10	40.00%	2.0	7	71.43%	1.2
Queen of Pain	5	6.76%	57.69	8.65	1	100.00%	0.2	4	75.00%	0.7
Naga Siren	5	6.76%	57.69	8.65	1	100.00%	0.2	4	75.00%	0.7
Terrorblade	21	28.38%	55.77	68.27	5	20.00%	1.0	16	62.50%	2.7
Pudge	6	8.11%	54.81	16.35	3	66.67%	0.6	3	66.67%	0.5
Hoodwink	17	22.97%	53.85	73.08	11	36.36%	2.2	6	66.67%	1.0
Visage	25	33.78%	52.88	92.31	9	44.44%	1.8	16	31.25%	2.7
Storm Spirit	8	10.81%	51.92	25.96	2	50.00%	0.4	6	66.67%	1.0
Invoker	19	25.68%	50.96	75.96	5	40.00%	1.0	14	42.86%	2.3
Pugna	9	12.16%	50.00	33.65	4	50.00%	0.8	5	60.00%	0.8
Huskar	7	9.46%	49.04	20.19	1	0.00%	0.2	6	83.33%	1.0
Ember Spirit	22	29.73%	48.08	95.19	12	33.33%	2.4	10	40.00%	1.7
Medusa	16	21.62%	47.12	72.12	4	25.00%	0.8	12	50.00%	2.0
Mirana	5	6.76%	46.15	17.31	3	66.67%	0.6	2	50.00%	0.3
Kunkka	12	16.22%	45.19	52.88	2	50.00%	0.4	10	40.00%	1.7
Windranger	9	12.16%	44.23	49.04	5	40.00%	1.0	4	50.00%	0.7
Brewmaster	9	12.16%	44.23	49.04	5	40.00%	1.0	4	50.00%	0.7
Rubick	12	16.22%	42.31	71.15	7	28.57%	1.4	5	60.00%	0.8
Mars	11	14.86%	41.35	63.46	5	20.00%	1.0	6	66.67%	1.0
Nature's Prophet	7	9.46%	40.38	37.50	4	50.00%	0.8	3	33.33%	0.5
Phantom Assassin	7	9.46%	39.42	28.85	1	0.00%	0.2	6	66.67%	1.0
Morphling	9	12.16%	38.46	47.12	3	33.33%	0.6	6	50.00%	1.0
Treant Protector	6	8.11%	37.50	36.54	5	40.00%	1.0	1	100.00%	0.2
Legion Commander	6	8.11%	36.54	27.88	2	50.00%	0.4	4	50.00%	0.7
Anti-Mage	2	2.70%	35.58	2.88	0	0.00%	0.0	2	100.00%	0.3
Earthshaker	2	2.70%	35.58	0.96	0	0.00%	0.0	2	100.00%	0.3
Snapfire	9	12.16%	33.65	67.31	8	37.50%	1.6	1	0.00%	0.2
Sand King	6	8.11%	32.69	34.62	3	33.33%	0.6	3	66.67%	0.5
Shadow Demon	1	1.35%	31.73	5.77	1	100.00%	0.2	0	0.00%	0.0
Sven	1	1.35%	31.73	1.92	1	100.00%	0.2	0	0.00%	0.0
Death Prophet	7	9.46%	29.81	50.96	4	50.00%	0.8	3	0.00%	0.5
Chen	8	10.81%	28.85	57.69	4	25.00%	0.8	4	50.00%	0.7
Pangolier	10	13.51%	27.88	76.92	4	25.00%	0.8	6	33.33%	1.0
Crystal Maiden	14	18.92%	26.92	100.00	12	16.67%	2.4	2	50.00%	0.3
Troll Warlord	3	4.05%	25.96	14.42	1	0.00%	0.2	2	100.00%	0.3
Shadow Shaman	5	6.76%	25.00	45.19	4	25.00%	0.8	1	100.00%	0.2
Grimstroke	3	4.05%	24.04	15.38	1	100.00%	0.2	2	0.00%	0.3
Ogre Magi	6	8.11%	23.08	53.85	4	25.00%	0.8	2	50.00%	0.3
Disruptor	2	2.70%	22.12	13.46	2	50.00%	0.4	0	0.00%	0.0
Magnus	2	2.70%	22.12	13.46	2	50.00%	0.4	0	0.00%	0.0
Luna	2	2.70%	22.12	13.46	2	50.00%	0.4	0	0.00%	0.0
Gyrocopter	1	1.35%	19.23	4.81	0	0.00%	0.0	1	100.00%	0.2
Centaur Warrunner	1	1.35%	19.23	4.81	0	0.00%	0.0	1	100.00%	0.2
Nyx Assassin	3	4.05%	17.31	25.00	2	50.00%	0.4	1	0.00%	0.2
Phantom Lancer	5	6.76%	16.35	44.23	2	50.00%	0.4	3	0.00%	0.5
Wraith King	3	4.05%	15.38	30.77	3	33.33%	0.6	0	0.00%	0.0
Vengeful Spirit	4	5.41%	14.42	50.00	4	25.00%	0.8	0	0.00%	0.0
Tusk	6	8.11%	13.46	82.69	5	20.00%	1.0	1	0.00%	0.2
Warlock	6	8.11%	12.50	86.54	6	16.67%	1.2	0	0.00%	0.0
Tidehunter	3	4.05%	11.54	29.81	1	0.00%	0.2	2	50.00%	0.3
Ursa	6	8.11%	10.58	78.85	2	0.00%	0.4	4	25.00%	0.7
Abaddon	5	6.76%	9.62	74.04	3	0.00%	0.6	2	50.00%	0.3
Undying	2	2.70%	8.65	46.15	2	0.00%	0.4	0	0.00%	0.0
Outworld Destroyer	4	5.41%	7.69	81.73	2	0.00%	0.4	2	0.00%	0.3
Lina	6	8.11%	6.73	88.46	0	0.00%	0.0	6	0.00%	1.0
Underlord	4	5.41%	5.77	81.73	2	0.00%	0.4	2	0.00%	0.3
Techies	1	1.35%	4.81	24.04	1	0.00%	0.2	0	0.00%	0.0
Riki	1	1.35%	4.81	24.04	1	0.00%	0.2	0	0.00%	0.0
Earth Spirit	1	1.35%	4.81	24.04	1	0.00%	0.2	0	0.00%	0.0
Spectre	1	1.35%	4.81	24.04	1	0.00%	0.2	0	0.00%	0.0
Ancient Apparition	1	1.35%	0.96	13.46	0	0.00%	0.0	1	0.00%	0.2