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: 73

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

Balance rank	Winrate	Pickrate	Contest Rate
59.6	84.0	37.9	29.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Slark	50	68.49%	100.00	45.64	9	77.78%	1.8	41	65.85%	6.8
Doom	58	79.45%	94.75	58.79	22	63.64%	4.4	36	63.89%	6.0
Techies	70	95.89%	89.69	73.60	29	68.97%	5.8	41	43.90%	6.8
Monkey King	57	78.08%	84.04	69.09	14	50.00%	2.8	43	62.79%	7.2
Medusa	66	90.41%	83.71	77.23	22	59.09%	4.4	44	52.27%	7.3
Storm Spirit	59	80.82%	80.25	75.10	20	70.00%	4.0	39	41.03%	6.5
Faceless Void	42	57.53%	77.28	61.41	11	63.64%	2.2	31	54.84%	5.2
Alchemist	40	54.79%	76.70	59.82	11	63.64%	2.2	29	55.17%	4.8
Anti-Mage	38	52.05%	76.62	55.55	2	50.00%	0.4	36	61.11%	6.0
Batrider	62	84.93%	76.37	82.31	19	42.11%	3.8	43	60.47%	7.2
Silencer	45	61.64%	73.11	71.22	27	51.85%	5.4	18	61.11%	3.0
Skywrath Mage	15	20.55%	69.91	30.24	13	69.23%	2.6	2	50.00%	0.3
Timbersaw	58	79.45%	68.93	87.83	24	54.17%	4.8	34	41.18%	5.7
Pangolier	48	65.75%	67.41	79.68	16	43.75%	3.2	32	56.25%	5.3
Beastmaster	65	89.04%	67.29	95.78	17	52.94%	3.4	48	41.67%	8.0
Void Spirit	45	61.64%	65.94	79.56	27	55.56%	5.4	18	33.33%	3.0
Spirit Breaker	51	69.86%	65.86	85.44	28	46.43%	5.6	23	52.17%	3.8
Crystal Maiden	29	39.73%	65.23	62.13	24	58.33%	4.8	5	20.00%	0.8
Ember Spirit	60	82.19%	62.96	96.66	19	36.84%	3.8	41	51.22%	6.8
Windranger	29	39.73%	60.12	67.59	22	45.45%	4.4	7	85.71%	1.2
Puck	34	46.58%	59.60	71.64	10	60.00%	2.0	24	41.67%	4.0
Phoenix	15	20.55%	57.81	39.51	10	60.00%	2.0	5	60.00%	0.8
Queen of Pain	33	45.21%	57.31	73.02	10	60.00%	2.0	23	39.13%	3.8
Bane	3	4.11%	55.65	0.00	3	100.00%	0.6	0	0.00%	0.0
Keeper of the Light	37	50.68%	54.91	83.67	21	42.86%	4.2	16	50.00%	2.7
Winter Wyvern	11	15.07%	54.87	26.83	6	66.67%	1.2	5	60.00%	0.8
Venomancer	14	19.18%	54.14	36.49	6	66.67%	1.2	8	50.00%	1.3
Terrorblade	40	54.79%	54.08	87.17	15	40.00%	3.0	25	48.00%	4.2
Brewmaster	10	13.70%	54.02	22.80	5	80.00%	1.0	5	40.00%	0.8
Bloodseeker	35	47.95%	52.38	80.42	5	60.00%	1.0	30	40.00%	5.0
Phantom Lancer	20	27.40%	51.62	55.43	7	42.86%	1.4	13	61.54%	2.2
Ursa	20	27.40%	51.30	54.17	5	20.00%	1.0	15	73.33%	2.5
Shadow Demon	17	23.29%	50.54	55.18	14	50.00%	2.8	3	66.67%	0.5
Naga Siren	32	43.84%	49.85	80.50	9	44.44%	1.8	23	43.48%	3.8
Ogre Magi	3	4.11%	49.85	0.00	2	100.00%	0.4	1	100.00%	0.2
Dark Seer	13	17.81%	49.45	32.38	2	50.00%	0.4	11	63.64%	1.8
Shadow Fiend	4	5.48%	46.99	0.00	0	0.00%	0.0	4	100.00%	0.7
Oracle	21	28.77%	46.24	65.54	9	44.44%	1.8	12	50.00%	2.0
Magnus	38	52.05%	44.49	98.87	24	33.33%	4.8	14	50.00%	2.3
Rubick	22	30.14%	43.96	73.94	15	40.00%	3.0	7	57.14%	1.2
Pudge	8	10.96%	43.25	24.83	5	60.00%	1.0	3	66.67%	0.5
Visage	21	28.77%	40.61	71.38	7	57.14%	1.4	14	28.57%	2.3
Underlord	20	27.40%	40.60	67.31	5	60.00%	1.0	15	33.33%	2.5
Legion Commander	13	17.81%	35.92	50.83	4	50.00%	0.8	9	44.44%	1.5
Viper	3	4.11%	35.19	0.00	0	0.00%	0.0	3	100.00%	0.5
Primal Beast	6	8.22%	34.66	21.26	4	50.00%	0.8	2	100.00%	0.3
Pugna	14	19.18%	32.24	60.92	5	60.00%	1.0	9	22.22%	1.5
Morphling	28	38.36%	32.17	100.00	13	30.77%	2.6	15	33.33%	2.5
Templar Assassin	8	10.96%	31.62	26.11	1	0.00%	0.2	7	71.43%	1.2
Omniknight	7	9.59%	30.18	25.18	2	100.00%	0.4	5	20.00%	0.8
Mirana	15	20.55%	28.64	75.49	10	40.00%	2.0	5	20.00%	0.8
Io	4	5.48%	28.19	9.99	2	100.00%	0.4	2	0.00%	0.3
Disruptor	13	17.81%	26.97	70.55	9	33.33%	1.8	4	50.00%	0.7
Dragon Knight	9	12.33%	23.61	47.38	3	33.33%	0.6	6	50.00%	1.0
Dark Willow	10	13.70%	23.30	59.89	6	50.00%	1.2	4	0.00%	0.7
Bounty Hunter	10	13.70%	20.51	59.94	4	50.00%	0.8	6	16.67%	1.0
Muerta	4	5.48%	20.36	24.26	4	50.00%	0.8	0	0.00%	0.0
Lich	9	12.33%	19.95	66.49	9	33.33%	1.8	0	0.00%	0.0
Lone Druid	3	4.11%	19.21	11.02	2	50.00%	0.4	1	100.00%	0.2
Sven	5	6.85%	19.00	32.89	4	50.00%	0.8	1	0.00%	0.2
Enchantress	13	17.81%	18.85	82.49	8	25.00%	1.6	5	40.00%	0.8
Witch Doctor	1	1.37%	18.63	0.00	1	100.00%	0.2	0	0.00%	0.0
Clockwerk	1	1.37%	18.63	0.00	1	100.00%	0.2	0	0.00%	0.0
Elder Titan	1	1.37%	18.63	0.00	1	100.00%	0.2	0	0.00%	0.0
Slardar	1	1.37%	18.63	0.00	1	100.00%	0.2	0	0.00%	0.0
Earthshaker	1	1.37%	18.63	0.00	1	100.00%	0.2	0	0.00%	0.0
Troll Warlord	5	6.85%	18.23	21.83	1	100.00%	0.2	4	25.00%	0.7
Mars	4	5.48%	17.05	20.32	2	50.00%	0.4	2	50.00%	0.3
Abaddon	5	6.85%	16.94	39.34	5	40.00%	1.0	0	0.00%	0.0
Axe	7	9.59%	16.91	49.13	4	25.00%	0.8	3	66.67%	0.5
Drow Ranger	3	4.11%	16.11	5.26	0	0.00%	0.0	3	66.67%	0.5
Meepo	3	4.11%	16.11	5.26	0	0.00%	0.0	3	66.67%	0.5
Marci	4	5.48%	14.42	28.17	3	33.33%	0.6	1	100.00%	0.2
Arc Warden	11	15.07%	13.11	80.42	5	20.00%	1.0	6	33.33%	1.0
Juggernaut	5	6.85%	11.78	44.52	4	25.00%	0.8	1	100.00%	0.2
Nyx Assassin	6	8.22%	11.15	53.13	4	25.00%	0.8	2	50.00%	0.3
Earth Spirit	2	2.74%	10.43	12.43	2	50.00%	0.4	0	0.00%	0.0
Clinkz	2	2.74%	10.43	12.43	2	50.00%	0.4	0	0.00%	0.0
Zeus	4	5.48%	10.16	24.86	1	0.00%	0.2	3	66.67%	0.5
Undying	9	12.33%	8.36	83.75	6	16.67%	1.2	3	33.33%	0.5
Kunkka	3	4.11%	7.63	31.15	3	33.33%	0.6	0	0.00%	0.0
Death Prophet	4	5.48%	7.11	41.64	3	33.33%	0.6	1	0.00%	0.2
Snapfire	5	6.85%	6.66	51.58	3	33.33%	0.6	2	0.00%	0.3
Lion	6	8.22%	5.64	66.68	4	25.00%	0.8	2	0.00%	0.3
Vengeful Spirit	3	4.11%	4.41	19.20	0	0.00%	0.0	3	33.33%	0.5
Riki	3	4.11%	3.28	29.51	1	0.00%	0.2	2	50.00%	0.3
Luna	4	5.48%	2.90	41.92	1	0.00%	0.2	3	33.33%	0.5
Tidehunter	5	6.85%	2.24	61.11	2	0.00%	0.4	3	33.33%	0.5
Lifestealer	2	2.74%	0.00	37.20	1	0.00%	0.2	1	0.00%	0.2
Weaver	2	2.74%	0.00	45.99	2	0.00%	0.4	0	0.00%	0.0
Centaur Warrunner	2	2.74%	0.00	45.99	2	0.00%	0.4	0	0.00%	0.0
Ancient Apparition	2	2.74%	0.00	37.20	1	0.00%	0.2	1	0.00%	0.2
Jakiro	1	1.37%	0.00	22.21	1	0.00%	0.2	0	0.00%	0.0
Huskar	1	1.37%	0.00	11.95	0	0.00%	0.0	1	0.00%	0.2
Spectre	1	1.37%	0.00	11.95	0	0.00%	0.0	1	0.00%	0.2
Grimstroke	1	1.37%	0.00	22.21	1	0.00%	0.2	0	0.00%	0.0