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): 8 - Matches: 68

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

Balance rank	Winrate	Pickrate	Contest Rate
57.1	77.5	37.2	35.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Beastmaster	31	45.59%	100.00	36.26	6	83.33%	1.2	25	72.00%	3.1
Doom	24	35.29%	98.90	37.36	10	80.00%	2.0	14	64.29%	1.8
Bloodseeker	37	54.41%	97.80	61.54	10	80.00%	2.0	27	51.85%	3.4
Timbersaw	22	32.35%	96.70	41.76	9	66.67%	1.8	13	76.92%	1.6
Mirana	21	30.88%	95.60	45.05	16	81.25%	3.2	5	0.00%	0.6
Puck	45	66.18%	94.51	69.23	15	60.00%	3.0	30	56.67%	3.8
Visage	20	29.41%	93.41	42.86	10	70.00%	2.0	10	70.00%	1.3
Sand King	50	73.53%	92.31	75.82	22	63.64%	4.4	28	42.86%	3.5
Io	65	95.59%	91.21	87.91	9	44.44%	1.8	56	53.57%	7.0
Dragon Knight	54	79.41%	90.11	82.42	24	58.33%	4.8	30	46.67%	3.8
Storm Spirit	53	77.94%	89.01	83.52	31	54.84%	6.2	22	50.00%	2.8
Keeper of the Light	36	52.94%	87.91	65.93	15	66.67%	3.0	21	47.62%	2.6
Pugna	59	86.76%	86.81	85.71	18	38.89%	3.6	41	60.98%	5.1
Phantom Assassin	13	19.12%	85.71	23.08	4	75.00%	0.8	9	77.78%	1.1
Phoenix	9	13.24%	84.62	15.38	7	85.71%	1.4	2	50.00%	0.3
Medusa	57	83.82%	83.52	84.62	10	30.00%	2.0	47	59.57%	5.9
Underlord	24	35.29%	82.42	59.34	9	55.56%	1.8	15	66.67%	1.9
Leshrac	13	19.12%	81.32	35.16	9	77.78%	1.8	4	25.00%	0.5
Abaddon	9	13.24%	80.22	19.78	4	75.00%	0.8	5	80.00%	0.6
Shadow Shaman	32	47.06%	79.12	73.63	22	54.55%	4.4	10	40.00%	1.3
Skywrath Mage	22	32.35%	78.02	62.64	14	50.00%	2.8	8	75.00%	1.0
Bane	52	76.47%	76.92	92.31	33	54.55%	6.6	19	10.53%	2.4
Mars	65	95.59%	75.82	98.90	32	40.63%	6.4	33	39.39%	4.1
Invoker	34	50.00%	74.73	76.92	5	20.00%	1.0	29	58.62%	3.6
Faceless Void	25	36.76%	73.63	63.74	5	40.00%	1.0	20	60.00%	2.5
Tiny	29	42.65%	72.53	72.53	11	54.55%	2.2	18	44.44%	2.3
Chaos Knight	60	88.24%	71.43	97.80	19	31.58%	3.8	41	46.34%	5.1
Pangolier	41	60.29%	70.33	91.21	15	40.00%	3.0	26	42.31%	3.3
Treant Protector	3	4.41%	69.23	1.10	2	100.00%	0.4	1	100.00%	0.1
Terrorblade	16	23.53%	68.13	60.44	6	66.67%	1.2	10	40.00%	1.3
Huskar	8	11.76%	67.03	16.48	0	0.00%	0.0	8	75.00%	1.0
Enchantress	34	50.00%	65.93	90.11	19	42.11%	3.8	15	40.00%	1.9
Wraith King	21	30.88%	64.84	68.13	8	50.00%	1.6	13	46.15%	1.6
Phantom Lancer	12	17.65%	63.74	48.35	4	50.00%	0.8	8	62.50%	1.0
Jakiro	9	13.24%	62.64	39.56	6	66.67%	1.2	3	33.33%	0.4
Ember Spirit	39	57.35%	61.54	95.60	18	27.78%	3.6	21	52.38%	2.6
Lina	24	35.29%	60.44	81.32	11	45.45%	2.2	13	38.46%	1.6
Grimstroke	40	58.82%	59.34	96.70	21	33.33%	4.2	19	42.11%	2.4
Spectre	11	16.18%	58.24	47.25	5	80.00%	1.0	6	16.67%	0.8
Death Prophet	36	52.94%	57.14	93.41	15	33.33%	3.0	21	42.86%	2.6
Chen	5	7.35%	56.04	13.19	3	100.00%	0.6	2	0.00%	0.3
Techies	4	5.88%	54.95	7.69	2	100.00%	0.4	2	50.00%	0.3
Batrider	13	19.12%	53.85	56.04	2	50.00%	0.4	11	54.55%	1.4
Lifestealer	10	14.71%	52.75	40.66	2	100.00%	0.4	8	37.50%	1.0
Clockwerk	10	14.71%	51.65	57.14	9	55.56%	1.8	1	0.00%	0.1
Templar Assassin	20	29.41%	50.55	78.02	7	28.57%	1.4	13	53.85%	1.6
Night Stalker	5	7.35%	49.45	14.29	2	100.00%	0.4	3	33.33%	0.4
Drow Ranger	4	5.88%	48.35	9.89	1	100.00%	0.2	3	66.67%	0.4
Monkey King	23	33.82%	47.25	86.81	7	28.57%	1.4	16	43.75%	2.0
Anti-Mage	20	29.41%	46.15	80.22	3	33.33%	0.6	17	41.18%	2.1
Nature's Prophet	19	27.94%	45.05	79.12	4	50.00%	0.8	15	33.33%	1.9
Weaver	9	13.24%	43.96	54.95	5	60.00%	1.0	4	25.00%	0.5
Snapfire	20	29.41%	42.86	89.01	17	29.41%	3.4	3	100.00%	0.4
Windranger	3	4.41%	41.76	8.79	2	100.00%	0.4	1	0.00%	0.1
Shadow Demon	7	10.29%	40.66	38.46	4	75.00%	0.8	3	0.00%	0.4
Axe	5	7.35%	39.56	24.18	3	66.67%	0.6	2	50.00%	0.3
Viper	15	22.06%	38.46	70.33	5	0.00%	1.0	10	80.00%	1.3
Undying	9	13.24%	37.36	51.65	3	33.33%	0.6	6	66.67%	0.8
Ursa	9	13.24%	37.36	51.65	3	33.33%	0.6	6	66.67%	0.8
Morphling	2	2.94%	35.16	2.20	1	100.00%	0.2	1	100.00%	0.1
Razor	16	23.53%	34.07	74.73	5	40.00%	1.0	11	36.36%	1.4
Hoodwink	22	32.35%	32.97	94.51	18	27.78%	3.6	4	50.00%	0.5
Kunkka	35	51.47%	31.87	100.00	12	25.00%	2.4	23	26.09%	2.9
Void Spirit	7	10.29%	30.77	43.96	3	33.33%	0.6	4	75.00%	0.5
Necrophos	12	17.65%	29.67	64.84	3	33.33%	0.6	9	44.44%	1.1
Lycan	7	10.29%	28.57	53.85	4	50.00%	0.8	3	33.33%	0.4
Juggernaut	7	10.29%	28.57	53.85	4	50.00%	0.8	3	33.33%	0.4
Slardar	6	8.82%	26.37	46.15	3	33.33%	0.6	3	66.67%	0.4
Disruptor	9	13.24%	25.27	71.43	9	33.33%	1.8	0	0.00%	0.0
Ancient Apparition	3	4.41%	24.18	18.68	2	50.00%	0.4	1	100.00%	0.1
Troll Warlord	3	4.41%	24.18	18.68	2	50.00%	0.4	1	100.00%	0.1
Sven	1	1.47%	21.98	5.49	1	100.00%	0.2	0	0.00%	0.0
Spirit Breaker	1	1.47%	21.98	5.49	1	100.00%	0.2	0	0.00%	0.0
Oracle	1	1.47%	21.98	5.49	1	100.00%	0.2	0	0.00%	0.0
Broodmother	5	7.35%	18.68	26.37	1	0.00%	0.2	4	75.00%	0.5
Dazzle	2	2.94%	17.58	12.09	1	100.00%	0.2	1	0.00%	0.1
Gyrocopter	2	2.94%	17.58	12.09	1	100.00%	0.2	1	0.00%	0.1
Rubick	2	2.94%	15.38	21.98	2	50.00%	0.4	0	0.00%	0.0
Tidehunter	4	5.88%	14.29	34.07	1	0.00%	0.2	3	66.67%	0.4
Legion Commander	1	1.47%	13.19	6.59	0	0.00%	0.0	1	100.00%	0.1
Sniper	5	7.35%	12.09	58.24	2	50.00%	0.4	3	0.00%	0.4
Centaur Warrunner	2	2.94%	10.99	25.27	1	0.00%	0.2	1	100.00%	0.1
Winter Wyvern	2	2.94%	9.89	49.45	1	0.00%	0.2	1	0.00%	0.1
Crystal Maiden	1	1.47%	8.79	32.97	1	0.00%	0.2	0	0.00%	0.0
Brewmaster	1	1.47%	7.69	20.88	0	0.00%	0.0	1	0.00%	0.1
Lich	1	1.47%	6.59	32.97	1	0.00%	0.2	0	0.00%	0.0
Enigma	1	1.47%	6.59	32.97	1	0.00%	0.2	0	0.00%	0.0
Luna	1	1.47%	6.59	32.97	1	0.00%	0.2	0	0.00%	0.0
Magnus	1	1.47%	6.59	32.97	1	0.00%	0.2	0	0.00%	0.0
Alchemist	1	1.47%	6.59	32.97	1	0.00%	0.2	0	0.00%	0.0
Queen of Pain	3	4.41%	1.10	68.13	2	0.00%	0.4	1	0.00%	0.1