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: 71

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

Balance rank	Winrate	Pickrate	Contest Rate
52.2	72.7	30.6	33.9

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Underlord	36	50.70%	100.00	29.77	14	85.71%	2.8	22	63.64%	3.1
Techies	67	94.37%	90.48	66.50	38	71.05%	7.6	29	34.48%	4.1
Morphling	23	32.39%	83.84	26.54	7	71.43%	1.4	16	75.00%	2.3
Beastmaster	62	87.32%	80.97	72.96	18	66.67%	3.6	44	47.73%	6.3
Arc Warden	12	16.90%	80.44	6.17	2	100.00%	0.4	10	80.00%	1.4
Enchantress	53	74.65%	79.40	66.86	18	72.22%	3.6	35	42.86%	5.0
Pangolier	54	76.06%	77.17	71.26	36	58.33%	7.2	18	44.44%	2.6
Bounty Hunter	18	25.35%	75.56	23.07	4	50.00%	0.8	14	85.71%	2.0
Terrorblade	53	74.65%	73.72	73.75	22	45.45%	4.4	31	64.52%	4.4
Doom	70	98.59%	72.68	89.36	29	55.17%	5.8	41	41.46%	5.9
Slark	47	66.20%	72.35	68.77	13	69.23%	2.6	34	44.12%	4.9
Abaddon	6	8.45%	70.80	1.78	5	100.00%	1.0	1	0.00%	0.1
Void Spirit	42	59.15%	66.68	71.87	27	55.56%	5.4	15	40.00%	2.1
Timbersaw	38	53.52%	65.83	65.84	9	33.33%	1.8	29	65.52%	4.1
Alchemist	43	60.56%	64.85	73.76	16	50.00%	3.2	27	51.85%	3.9
Bloodseeker	53	74.65%	64.76	83.79	16	37.50%	3.2	37	56.76%	5.3
Naga Siren	40	56.34%	64.52	70.21	12	58.33%	2.4	28	46.43%	4.0
Rubick	39	54.93%	64.34	70.15	17	52.94%	3.4	22	50.00%	3.1
Ember Spirit	57	80.28%	64.23	88.83	31	45.16%	6.2	26	50.00%	3.7
Venomancer	29	40.85%	62.71	59.83	17	52.94%	3.4	12	58.33%	1.7
Tidehunter	20	28.17%	62.53	40.09	6	83.33%	1.2	14	42.86%	2.0
Monkey King	47	66.20%	62.49	80.15	11	45.45%	2.2	36	50.00%	5.1
Puck	21	29.58%	61.83	40.06	2	0.00%	0.4	19	73.68%	2.7
Batrider	57	80.28%	59.46	93.93	17	23.53%	3.4	40	60.00%	5.7
Silencer	25	35.21%	58.89	58.79	18	55.56%	3.6	7	42.86%	1.0
Pugna	35	49.30%	57.58	73.88	19	42.11%	3.8	16	62.50%	2.3
Templar Assassin	16	22.54%	57.16	39.21	9	66.67%	1.8	7	42.86%	1.0
Medusa	49	69.01%	57.01	89.54	17	41.18%	3.4	32	46.88%	4.6
Storm Spirit	38	53.52%	56.38	77.38	11	45.45%	2.2	27	48.15%	3.9
Mirana	13	18.31%	54.92	35.09	10	60.00%	2.0	3	66.67%	0.4
Keeper of the Light	43	60.56%	54.19	87.12	19	42.11%	3.8	24	45.83%	3.4
Clockwerk	14	19.72%	52.97	33.08	4	75.00%	0.8	10	50.00%	1.4
Phantom Lancer	23	32.39%	52.63	56.98	6	50.00%	1.2	17	52.94%	2.4
Windranger	16	22.54%	52.38	47.36	13	61.54%	2.6	3	0.00%	0.4
Faceless Void	27	38.03%	49.55	68.62	7	57.14%	1.4	20	40.00%	2.9
Magnus	46	64.79%	47.00	100.00	23	34.78%	4.6	23	43.48%	3.3
Dark Willow	8	11.27%	46.50	25.47	8	62.50%	1.6	0	0.00%	0.0
Queen of Pain	14	19.72%	43.20	44.66	5	80.00%	1.0	9	22.22%	1.3
Disruptor	31	43.66%	42.72	86.49	15	33.33%	3.0	16	50.00%	2.3
Lich	13	18.31%	42.03	50.04	11	54.55%	2.2	2	0.00%	0.3
Shadow Demon	12	16.90%	40.58	41.03	5	80.00%	1.0	7	14.29%	1.0
Spirit Breaker	20	28.17%	40.19	70.57	13	38.46%	2.6	7	57.14%	1.0
Clinkz	10	14.08%	39.10	38.71	7	42.86%	1.4	3	100.00%	0.4
Dark Seer	19	26.76%	38.64	60.09	1	0.00%	0.2	18	50.00%	2.6
Bane	4	5.63%	34.18	8.26	3	66.67%	0.6	1	100.00%	0.1
Elder Titan	6	8.45%	32.45	16.50	2	100.00%	0.4	4	25.00%	0.6
Anti-Mage	13	18.31%	31.31	46.72	0	0.00%	0.0	13	46.15%	1.9
Shadow Fiend	2	2.82%	30.55	0.00	1	100.00%	0.2	1	100.00%	0.1
Ursa	10	14.08%	29.35	34.80	0	0.00%	0.0	10	50.00%	1.4
Crystal Maiden	20	28.17%	28.45	87.62	14	28.57%	2.8	6	50.00%	0.9
Phoenix	8	11.27%	27.49	32.29	2	0.00%	0.4	6	83.33%	0.9
Dragon Knight	13	18.31%	24.82	61.92	3	33.33%	0.6	10	40.00%	1.4
Oracle	21	29.58%	24.45	90.59	6	16.67%	1.2	15	40.00%	2.1
Warlock	3	4.23%	24.24	3.82	1	100.00%	0.2	2	50.00%	0.3
Muerta	4	5.63%	23.13	16.74	3	66.67%	0.6	1	0.00%	0.1
Kunkka	8	11.27%	22.36	44.58	4	25.00%	0.8	4	75.00%	0.6
Chen	2	2.82%	22.12	0.00	0	0.00%	0.0	2	100.00%	0.3
Axe	4	5.63%	20.44	11.81	1	100.00%	0.2	3	33.33%	0.4
Grimstroke	4	5.63%	19.92	23.62	4	50.00%	0.8	0	0.00%	0.0
Earth Spirit	9	12.68%	19.48	56.71	5	40.00%	1.0	4	25.00%	0.6
Skywrath Mage	19	26.76%	19.07	97.03	9	11.11%	1.8	10	50.00%	1.4
Witch Doctor	1	1.41%	18.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Lone Druid	4	5.63%	16.70	19.79	2	50.00%	0.4	2	50.00%	0.3
Brewmaster	9	12.68%	16.32	56.92	3	33.33%	0.6	6	33.33%	0.9
Legion Commander	8	11.27%	13.52	49.23	1	0.00%	0.2	7	42.86%	1.0
Invoker	2	2.82%	10.21	12.10	2	50.00%	0.4	0	0.00%	0.0
Meepo	4	5.63%	9.96	24.22	1	0.00%	0.2	3	66.67%	0.4
Sand King	1	1.41%	9.81	0.00	0	0.00%	0.0	1	100.00%	0.1
Night Stalker	1	1.41%	9.81	0.00	0	0.00%	0.0	1	100.00%	0.1
Tiny	1	1.41%	9.81	0.00	0	0.00%	0.0	1	100.00%	0.1
Troll Warlord	1	1.41%	9.81	0.00	0	0.00%	0.0	1	100.00%	0.1
Luna	3	4.23%	9.06	22.30	2	50.00%	0.4	1	0.00%	0.1
Mars	3	4.23%	7.48	30.32	3	33.33%	0.6	0	0.00%	0.0
Tinker	6	8.45%	7.00	52.51	2	0.00%	0.4	4	50.00%	0.6
Snapfire	5	7.04%	5.78	56.46	4	25.00%	0.8	1	0.00%	0.1
Leshrac	2	2.82%	5.76	6.83	0	0.00%	0.0	2	50.00%	0.3
Dawnbreaker	3	4.23%	3.22	28.74	1	0.00%	0.2	2	50.00%	0.3
Huskar	3	4.23%	3.22	28.74	1	0.00%	0.2	2	50.00%	0.3
Sven	4	5.63%	2.84	40.83	1	0.00%	0.2	3	33.33%	0.4
Dazzle	2	2.82%	0.00	44.74	2	0.00%	0.4	0	0.00%	0.0
Juggernaut	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Io	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Omniknight	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Lifestealer	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Phantom Assassin	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Sniper	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Marci	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Primal Beast	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Earthshaker	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Centaur Warrunner	1	1.41%	0.00	21.60	1	0.00%	0.2	0	0.00%	0.0
Pudge	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Undying	4	5.63%	0.00	75.44	3	0.00%	0.6	1	0.00%	0.1
Winter Wyvern	2	2.82%	0.00	44.74	2	0.00%	0.4	0	0.00%	0.0
Zeus	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Nyx Assassin	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Chaos Knight	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Outworld Destroyer	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1
Viper	3	4.23%	0.00	40.86	0	0.00%	0.0	3	0.00%	0.4
Vengeful Spirit	2	2.82%	0.00	44.74	2	0.00%	0.4	0	0.00%	0.0
Visage	3	4.23%	0.00	50.04	1	0.00%	0.2	2	0.00%	0.3
Death Prophet	2	2.82%	0.00	44.74	2	0.00%	0.4	0	0.00%	0.0
Riki	1	1.41%	0.00	11.63	0	0.00%	0.0	1	0.00%	0.1