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: 73

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

Balance rank	Winrate	Pickrate	Contest Rate
64.8	83.8	47.5	42.6

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Marci	61	83.56%	100.00	57.69	19	73.68%	3.8	42	59.52%	6.0
Zeus	42	57.53%	99.04	54.81	24	70.83%	4.8	18	44.44%	2.6
Bloodseeker	60	82.19%	98.08	76.92	9	66.67%	1.8	51	54.90%	7.3
Puck	65	89.04%	97.12	89.42	36	55.56%	7.2	29	48.28%	4.1
Winter Wyvern	39	53.42%	96.15	61.54	26	61.54%	5.2	13	53.85%	1.9
Viper	62	84.93%	95.19	87.50	8	37.50%	1.6	54	57.41%	7.7
Clockwerk	36	49.32%	94.23	60.58	28	60.71%	5.6	8	50.00%	1.1
Bristleback	41	56.16%	93.27	67.31	14	64.29%	2.8	27	51.85%	3.9
Phoenix	11	15.07%	92.31	18.27	7	85.71%	1.4	4	50.00%	0.6
Monkey King	41	56.16%	91.35	73.08	16	62.50%	3.2	25	48.00%	3.6
Tiny	55	75.34%	90.38	88.46	27	44.44%	5.4	28	64.29%	4.0
Slardar	8	10.96%	89.42	11.54	5	80.00%	1.0	3	100.00%	0.4
Templar Assassin	19	26.03%	88.46	32.69	5	80.00%	1.0	14	57.14%	2.0
Alchemist	45	61.64%	87.50	79.81	10	60.00%	2.0	35	48.57%	5.0
Beastmaster	60	82.19%	86.54	96.15	24	54.17%	4.8	36	38.89%	5.1
Doom	28	38.36%	85.58	66.35	18	55.56%	3.6	10	50.00%	1.4
Razor	48	65.75%	84.62	92.31	19	63.16%	3.8	29	27.59%	4.1
Lycan	26	35.62%	83.65	55.77	6	50.00%	1.2	20	60.00%	2.9
Jakiro	16	21.92%	82.69	43.27	15	60.00%	3.0	1	100.00%	0.1
Chaos Knight	39	53.42%	81.73	84.62	14	57.14%	2.8	25	40.00%	3.6
Timbersaw	37	50.68%	80.77	81.73	10	50.00%	2.0	27	48.15%	3.9
Keeper of the Light	33	45.21%	79.81	78.85	13	53.85%	2.6	20	45.00%	2.9
Storm Spirit	9	12.33%	78.85	16.35	3	66.67%	0.6	6	83.33%	0.9
Lone Druid	15	20.55%	77.88	33.65	4	100.00%	0.8	11	36.36%	1.6
Io	30	41.10%	76.92	77.88	11	45.45%	2.2	19	52.63%	2.7
Dawnbreaker	44	60.27%	75.96	97.12	30	43.33%	6.0	14	42.86%	2.0
Terrorblade	28	38.36%	75.00	74.04	6	33.33%	1.2	22	59.09%	3.1
Night Stalker	19	26.03%	74.04	50.96	6	66.67%	1.2	13	46.15%	1.9
Sniper	18	24.66%	73.08	45.19	3	66.67%	0.6	15	53.33%	2.1
Hoodwink	16	21.92%	72.12	46.15	7	42.86%	1.4	9	77.78%	1.3
Oracle	9	12.33%	71.15	21.15	4	100.00%	0.8	5	20.00%	0.7
Legion Commander	8	10.96%	70.19	17.31	3	100.00%	0.6	5	40.00%	0.7
Dragon Knight	26	35.62%	69.23	75.96	12	41.67%	2.4	14	57.14%	2.0
Void Spirit	29	39.73%	68.27	80.77	12	58.33%	2.4	17	29.41%	2.4
Enchantress	30	41.10%	67.31	83.65	12	33.33%	2.4	18	61.11%	2.6
Weaver	23	31.51%	66.35	71.15	10	30.00%	2.0	13	76.92%	1.9
Batrider	35	47.95%	65.38	93.27	8	25.00%	1.6	27	51.85%	3.9
Faceless Void	17	23.29%	64.42	51.92	4	50.00%	0.8	13	53.85%	1.9
Broodmother	4	5.48%	63.46	6.73	0	0.00%	0.0	4	100.00%	0.6
Juggernaut	21	28.77%	62.50	72.12	7	42.86%	1.4	14	50.00%	2.0
Naga Siren	5	6.85%	61.54	9.62	1	100.00%	0.2	4	75.00%	0.6
Venomancer	9	12.33%	60.58	23.08	2	50.00%	0.4	7	71.43%	1.0
Visage	21	28.77%	59.62	75.00	8	50.00%	1.6	13	38.46%	1.9
Dazzle	8	10.96%	58.65	28.85	5	60.00%	1.0	3	66.67%	0.4
Mirana	4	5.48%	57.69	7.69	2	100.00%	0.4	2	50.00%	0.3
Invoker	16	21.92%	56.73	58.65	5	60.00%	1.0	11	36.36%	1.6
Kunkka	19	26.03%	55.77	68.27	3	33.33%	0.6	16	50.00%	2.3
Ember Spirit	22	30.14%	54.81	85.58	11	36.36%	2.2	11	45.45%	1.6
Leshrac	16	21.92%	53.85	70.19	7	42.86%	1.4	9	44.44%	1.3
Pugna	9	12.33%	52.88	37.50	4	50.00%	0.8	5	60.00%	0.7
Phantom Assassin	10	13.70%	51.92	41.35	2	0.00%	0.4	8	75.00%	1.1
Ogre Magi	3	4.11%	50.96	8.65	2	100.00%	0.4	1	0.00%	0.1
Nature's Prophet	5	6.85%	50.00	20.19	3	66.67%	0.6	2	50.00%	0.3
Necrophos	11	15.07%	49.04	53.85	5	40.00%	1.0	6	50.00%	0.9
Enigma	38	52.05%	48.08	100.00	19	31.58%	3.8	19	15.79%	2.7
Rubick	11	15.07%	47.12	59.62	6	33.33%	1.2	5	60.00%	0.7
Huskar	8	10.96%	46.15	34.62	2	0.00%	0.4	6	83.33%	0.9
Warlock	6	8.22%	45.19	36.54	6	50.00%	1.2	0	0.00%	0.0
Vengeful Spirit	6	8.22%	45.19	36.54	6	50.00%	1.2	0	0.00%	0.0
Brewmaster	8	10.96%	43.27	44.23	5	40.00%	1.0	3	66.67%	0.4
Skywrath Mage	20	27.40%	42.31	94.23	9	22.22%	1.8	11	45.45%	1.6
Lifestealer	10	13.70%	41.35	63.46	8	37.50%	1.6	2	50.00%	0.3
Morphling	8	10.96%	40.38	42.31	3	33.33%	0.6	5	60.00%	0.7
Bane	7	9.59%	39.42	48.08	7	42.86%	1.4	0	0.00%	0.0
Wraith King	7	9.59%	38.46	40.38	4	25.00%	0.8	3	100.00%	0.4
Mars	11	15.07%	37.50	65.38	5	20.00%	1.0	6	66.67%	0.9
Treant Protector	6	8.22%	36.54	38.46	5	40.00%	1.0	1	100.00%	0.1
Earthshaker	2	2.74%	35.58	3.85	0	0.00%	0.0	2	100.00%	0.3
Anti-Mage	2	2.74%	35.58	3.85	0	0.00%	0.0	2	100.00%	0.3
Chen	10	13.70%	33.65	56.73	3	33.33%	0.6	7	42.86%	1.0
Shadow Shaman	7	9.59%	32.69	47.12	5	40.00%	1.0	2	50.00%	0.3
Underlord	5	6.85%	31.73	30.77	3	66.67%	0.6	2	0.00%	0.3
Grimstroke	5	6.85%	31.73	30.77	3	66.67%	0.6	2	0.00%	0.3
Snapfire	9	12.33%	29.81	69.23	8	37.50%	1.6	1	0.00%	0.1
Windranger	8	10.96%	28.85	52.88	5	40.00%	1.0	3	33.33%	0.4
Medusa	18	24.66%	27.88	98.08	4	25.00%	0.8	14	28.57%	2.0
Sven	1	1.37%	26.92	5.77	1	100.00%	0.2	0	0.00%	0.0
Shadow Demon	1	1.37%	26.92	5.77	1	100.00%	0.2	0	0.00%	0.0
Pudge	4	5.48%	25.00	22.12	2	50.00%	0.4	2	50.00%	0.3
Crystal Maiden	13	17.81%	24.04	95.19	11	18.18%	2.2	2	100.00%	0.3
Queen of Pain	3	4.11%	23.08	10.58	0	0.00%	0.0	3	66.67%	0.4
Pangolier	11	15.07%	22.12	82.69	4	25.00%	0.8	7	28.57%	1.0
Nyx Assassin	6	8.22%	21.15	50.00	3	33.33%	0.6	3	33.33%	0.4
Troll Warlord	3	4.11%	20.19	19.23	1	0.00%	0.2	2	100.00%	0.3
Disruptor	2	2.74%	19.23	15.38	2	50.00%	0.4	0	0.00%	0.0
Tidehunter	2	2.74%	19.23	15.38	2	50.00%	0.4	0	0.00%	0.0
Luna	2	2.74%	19.23	15.38	2	50.00%	0.4	0	0.00%	0.0
Magnus	2	2.74%	19.23	15.38	2	50.00%	0.4	0	0.00%	0.0
Gyrocopter	1	1.37%	15.38	1.92	0	0.00%	0.0	1	100.00%	0.1
Sand King	1	1.37%	15.38	1.92	0	0.00%	0.0	1	100.00%	0.1
Phantom Lancer	6	8.22%	13.46	64.42	3	33.33%	0.6	3	0.00%	0.4
Tusk	7	9.59%	12.50	90.38	6	16.67%	1.2	1	0.00%	0.1
Death Prophet	9	12.33%	11.54	99.04	6	16.67%	1.2	3	0.00%	0.4
Ursa	7	9.59%	10.58	91.35	3	0.00%	0.6	4	25.00%	0.6
Centaur Warrunner	2	2.74%	9.62	49.04	2	0.00%	0.4	0	0.00%	0.0
Abaddon	2	2.74%	8.65	39.42	1	0.00%	0.2	1	0.00%	0.1
Outworld Destroyer	3	4.11%	7.69	62.50	2	0.00%	0.4	1	0.00%	0.1
Spectre	1	1.37%	6.73	27.88	1	0.00%	0.2	0	0.00%	0.0
Undying	1	1.37%	6.73	27.88	1	0.00%	0.2	0	0.00%	0.0
Techies	1	1.37%	6.73	27.88	1	0.00%	0.2	0	0.00%	0.0
Lion	1	1.37%	6.73	27.88	1	0.00%	0.2	0	0.00%	0.0
Riki	1	1.37%	6.73	27.88	1	0.00%	0.2	0	0.00%	0.0
Lina	6	8.22%	1.92	86.54	0	0.00%	0.0	6	0.00%	0.9
Ancient Apparition	2	2.74%	0.96	32.69	0	0.00%	0.0	2	0.00%	0.3