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): 7 - Matches: 62

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

Balance rank	Winrate	Pickrate	Contest Rate
50.7	65.1	37.8	33.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Terrorblade	49	79.03%	100.00	51.22	17	82.35%	4.3	32	56.25%	4.6
Slardar	37	59.68%	98.78	41.46	22	63.64%	5.5	15	93.33%	2.1
Timbersaw	36	58.06%	97.56	47.56	22	59.09%	5.5	14	92.86%	2.0
Vengeful Spirit	44	70.97%	96.34	65.85	36	66.67%	9.0	8	12.50%	1.1
Earth Spirit	45	72.58%	95.12	68.29	21	71.43%	5.3	24	41.67%	3.4
Juggernaut	46	74.19%	93.90	71.95	30	60.00%	7.5	16	56.25%	2.3
Alchemist	30	48.39%	92.68	46.34	4	100.00%	1.0	26	53.85%	3.7
Naga Siren	6	9.68%	91.46	10.98	2	100.00%	0.5	4	100.00%	0.6
Lifestealer	30	48.39%	90.24	54.88	11	63.64%	2.8	19	57.89%	2.7
Broodmother	9	14.52%	89.02	15.85	4	100.00%	1.0	5	60.00%	0.7
Beastmaster	50	80.65%	87.80	80.49	10	60.00%	2.5	40	50.00%	5.7
Lion	43	69.35%	86.59	78.05	27	44.44%	6.8	16	81.25%	2.3
Invoker	47	75.81%	85.37	81.71	22	59.09%	5.5	25	40.00%	3.6
Tidehunter	42	67.74%	84.15	79.27	26	53.85%	6.5	16	50.00%	2.3
Elder Titan	48	77.42%	82.93	84.15	19	57.89%	4.8	29	41.38%	4.1
Nyx Assassin	4	6.45%	81.71	9.76	3	100.00%	0.8	1	100.00%	0.1
Clinkz	4	6.45%	81.71	9.76	3	100.00%	0.8	1	100.00%	0.1
Disruptor	39	62.90%	79.27	82.93	26	50.00%	6.5	13	46.15%	1.9
Faceless Void	49	79.03%	78.05	91.46	27	48.15%	6.8	22	36.36%	3.1
Death Prophet	48	77.42%	76.83	90.24	16	56.25%	4.0	32	34.38%	4.6
Riki	22	35.48%	75.61	59.76	9	55.56%	2.3	13	53.85%	1.9
Enchantress	16	25.81%	74.39	45.12	6	50.00%	1.5	10	70.00%	1.4
Witch Doctor	20	32.26%	73.17	64.63	17	47.06%	4.3	3	100.00%	0.4
Dark Seer	47	75.81%	71.95	96.34	19	36.84%	4.8	28	46.43%	4.0
Ember Spirit	21	33.87%	70.73	60.98	10	40.00%	2.5	11	72.73%	1.6
Phoenix	20	32.26%	69.51	63.41	13	53.85%	3.3	7	42.86%	1.0
Medusa	23	37.10%	68.29	70.73	7	57.14%	1.8	16	43.75%	2.3
Meepo	15	24.19%	67.07	43.90	1	100.00%	0.3	14	50.00%	2.0
Batrider	18	29.03%	65.85	67.07	9	55.56%	2.3	9	33.33%	1.3
Bloodseeker	2	3.23%	64.63	7.32	2	100.00%	0.5	0	0.00%	0.0
Sven	12	19.35%	63.41	53.66	5	40.00%	1.3	7	57.14%	1.0
Doom	18	29.03%	62.20	76.83	7	14.29%	1.8	11	72.73%	1.6
Drow Ranger	17	27.42%	60.98	75.61	8	37.50%	2.0	9	44.44%	1.3
Oracle	24	38.71%	59.76	92.68	17	35.29%	4.3	7	28.57%	1.0
Tinker	23	37.10%	58.54	87.80	8	25.00%	2.0	15	46.67%	2.1
Leshrac	3	4.84%	57.32	13.41	2	100.00%	0.5	1	0.00%	0.1
Shadow Demon	3	4.84%	57.32	13.41	2	100.00%	0.5	1	0.00%	0.1
Io	35	56.45%	54.88	98.78	9	22.22%	2.3	26	34.62%	3.7
Weaver	5	8.06%	53.66	24.39	3	66.67%	0.8	2	50.00%	0.3
Ancient Apparition	10	16.13%	52.44	56.10	6	50.00%	1.5	4	25.00%	0.6
Rubick	3	4.84%	51.22	19.51	3	66.67%	0.8	0	0.00%	0.0
Morphling	8	12.90%	50.00	52.44	6	33.33%	1.5	2	100.00%	0.3
Anti-Mage	5	8.06%	48.78	28.05	2	50.00%	0.5	3	66.67%	0.4
Windranger	3	4.84%	47.56	14.63	1	100.00%	0.3	2	50.00%	0.3
Puck	11	17.74%	46.34	69.51	5	20.00%	1.3	6	66.67%	0.9
Bristleback	4	6.45%	45.12	39.02	4	50.00%	1.0	0	0.00%	0.0
Necrophos	1	1.61%	43.90	4.88	1	100.00%	0.3	0	0.00%	0.0
Troll Warlord	1	1.61%	43.90	4.88	1	100.00%	0.3	0	0.00%	0.0
Keeper of the Light	1	1.61%	43.90	4.88	1	100.00%	0.3	0	0.00%	0.0
Mirana	1	1.61%	43.90	4.88	1	100.00%	0.3	0	0.00%	0.0
Nature's Prophet	4	6.45%	39.02	29.27	2	50.00%	0.5	2	50.00%	0.3
Enigma	5	8.06%	37.80	42.68	5	40.00%	1.3	0	0.00%	0.0
Gyrocopter	10	16.13%	36.59	73.17	3	0.00%	0.8	7	57.14%	1.0
Slark	23	37.10%	35.37	100.00	10	10.00%	2.5	13	30.77%	1.9
Storm Spirit	6	9.68%	34.15	58.54	4	25.00%	1.0	2	50.00%	0.3
Shadow Shaman	2	3.23%	32.93	23.17	2	50.00%	0.5	0	0.00%	0.0
Phantom Assassin	2	3.23%	32.93	23.17	2	50.00%	0.5	0	0.00%	0.0
Chaos Knight	1	1.61%	30.49	6.10	0	0.00%	0.0	1	100.00%	0.1
Crystal Maiden	3	4.84%	29.27	40.24	3	33.33%	0.8	0	0.00%	0.0
Lich	5	8.06%	28.05	57.32	3	33.33%	0.8	2	0.00%	0.3
Spectre	5	8.06%	26.83	62.20	4	25.00%	1.0	1	0.00%	0.1
Lone Druid	2	3.23%	25.61	18.29	0	0.00%	0.0	2	50.00%	0.3
Bounty Hunter	2	3.23%	25.61	18.29	0	0.00%	0.0	2	50.00%	0.3
Dazzle	6	9.68%	23.17	74.39	4	25.00%	1.0	2	0.00%	0.3
Queen of Pain	8	12.90%	21.95	85.37	4	0.00%	1.0	4	50.00%	0.6
Night Stalker	10	16.13%	20.73	93.90	4	0.00%	1.0	6	33.33%	0.9
Templar Assassin	7	11.29%	19.51	86.59	6	16.67%	1.5	1	0.00%	0.1
Dragon Knight	9	14.52%	18.29	95.12	6	16.67%	1.5	3	0.00%	0.4
Axe	9	14.52%	17.07	97.56	8	12.50%	2.0	1	0.00%	0.1
Jakiro	2	3.23%	15.85	26.83	1	0.00%	0.3	1	100.00%	0.1
Huskar	2	3.23%	15.85	26.83	1	0.00%	0.3	1	100.00%	0.1
Tiny	7	11.29%	13.41	89.02	4	0.00%	1.0	3	33.33%	0.4
Magnus	1	1.61%	12.20	37.80	1	0.00%	0.3	0	0.00%	0.0
Phantom Lancer	1	1.61%	12.20	37.80	1	0.00%	0.3	0	0.00%	0.0
Razor	1	1.61%	12.20	37.80	1	0.00%	0.3	0	0.00%	0.0
Silencer	1	1.61%	12.20	37.80	1	0.00%	0.3	0	0.00%	0.0
Shadow Fiend	1	1.61%	12.20	37.80	1	0.00%	0.3	0	0.00%	0.0
Viper	2	3.23%	6.10	50.00	2	0.00%	0.5	0	0.00%	0.0
Wraith King	1	1.61%	4.88	37.80	1	0.00%	0.3	0	0.00%	0.0
Winter Wyvern	2	3.23%	3.66	50.00	2	0.00%	0.5	0	0.00%	0.0
Undying	1	1.61%	2.44	37.80	1	0.00%	0.3	0	0.00%	0.0
Tusk	1	1.61%	1.22	23.17	0	0.00%	0.0	1	0.00%	0.1