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
59.3	79.5	41.5	34.1

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Lina	71	100.00%	100.00	68.50	14	50.00%	2.8	57	63.16%	8.1
Beastmaster	42	59.15%	94.85	48.41	11	45.45%	2.2	31	77.42%	4.4
Ember Spirit	57	80.28%	91.06	66.22	28	57.14%	5.6	29	58.62%	4.1
Silencer	35	49.30%	86.75	49.55	21	71.43%	4.2	14	35.71%	2.0
Ursa	26	36.62%	85.30	36.40	7	57.14%	1.4	19	73.68%	2.7
Broodmother	49	69.01%	84.38	65.10	15	53.33%	3.0	34	58.82%	4.9
Monkey King	46	64.79%	81.76	64.53	13	61.54%	2.6	33	51.52%	4.7
Templar Assassin	34	47.89%	80.95	50.82	6	50.00%	1.2	28	64.29%	4.0
Batrider	58	81.69%	80.80	76.29	7	71.43%	1.4	51	47.06%	7.3
Treant Protector	43	60.56%	80.37	63.56	18	55.56%	3.6	25	56.00%	3.6
Timbersaw	36	50.70%	79.44	55.36	10	90.00%	2.0	26	34.62%	3.7
Pangolier	43	60.56%	78.67	65.32	19	57.89%	3.8	24	50.00%	3.4
Leshrac	18	25.35%	74.65	30.56	6	83.33%	1.2	12	50.00%	1.7
Faceless Void	39	54.93%	72.44	65.93	10	70.00%	2.0	29	41.38%	4.1
Tiny	53	74.65%	71.54	82.43	24	54.17%	4.8	29	37.93%	4.1
Drow Ranger	15	21.13%	71.31	24.86	4	75.00%	0.8	11	63.64%	1.6
Slark	31	43.66%	71.28	54.79	3	33.33%	0.6	28	60.71%	4.0
Nyx Assassin	6	8.45%	69.85	2.12	3	100.00%	0.6	3	66.67%	0.4
Terrorblade	41	57.75%	69.12	72.16	13	53.85%	2.6	28	46.43%	4.0
Mirana	32	45.07%	68.17	64.55	22	50.00%	4.4	10	60.00%	1.4
Shadow Fiend	38	53.52%	68.02	70.11	14	42.86%	2.8	24	58.33%	3.4
Clockwerk	30	42.25%	65.87	61.78	12	66.67%	2.4	18	33.33%	2.6
Keeper of the Light	4	5.63%	65.08	0.00	2	100.00%	0.4	2	100.00%	0.3
Rubick	57	80.28%	64.66	94.20	43	46.51%	8.6	14	21.43%	2.0
Death Prophet	33	46.48%	64.32	67.17	11	54.55%	2.2	22	45.45%	3.1
Dawnbreaker	29	40.85%	64.18	62.16	12	41.67%	2.4	17	64.71%	2.4
Tidehunter	19	26.76%	63.20	43.39	7	57.14%	1.4	12	58.33%	1.7
Mars	50	70.42%	61.22	91.44	30	46.67%	6.0	20	30.00%	2.9
Earthshaker	6	8.45%	60.42	6.41	4	100.00%	0.8	2	0.00%	0.3
Dark Willow	3	4.23%	60.39	0.00	3	100.00%	0.6	0	0.00%	0.0
Disruptor	16	22.54%	58.62	46.98	15	53.33%	3.0	1	100.00%	0.1
Naga Siren	23	32.39%	58.14	55.69	6	66.67%	1.2	17	41.18%	2.4
Morphling	33	46.48%	57.88	73.94	11	27.27%	2.2	22	63.64%	3.1
Crystal Maiden	28	39.44%	57.88	70.06	21	47.62%	4.2	7	42.86%	1.0
Snapfire	43	60.56%	57.28	89.17	29	44.83%	5.8	14	28.57%	2.0
Tusk	48	67.61%	57.26	93.84	29	37.93%	5.8	19	47.37%	2.7
Spirit Breaker	14	19.72%	55.53	38.57	7	57.14%	1.4	7	57.14%	1.0
Bloodseeker	24	33.80%	54.06	61.25	5	40.00%	1.0	19	52.63%	2.7
Puck	23	32.39%	53.33	60.71	6	50.00%	1.2	17	47.06%	2.4
Jakiro	5	7.04%	52.85	6.67	4	75.00%	0.8	1	100.00%	0.1
Nature's Prophet	31	43.66%	51.89	78.73	14	35.71%	2.8	17	52.94%	2.4
Primal Beast	10	14.08%	50.09	28.36	5	60.00%	1.0	5	60.00%	0.7
Viper	10	14.08%	49.54	21.40	1	0.00%	0.2	9	77.78%	1.3
Lycan	3	4.23%	46.84	0.00	1	100.00%	0.2	2	100.00%	0.3
Enigma	11	15.49%	46.62	31.56	3	66.67%	0.6	8	50.00%	1.1
Chaos Knight	21	29.58%	44.61	64.64	4	75.00%	0.8	17	29.41%	2.4
Dark Seer	8	11.27%	41.92	25.67	4	50.00%	0.8	4	75.00%	0.6
Undying	21	29.58%	41.12	72.28	9	33.33%	1.8	12	50.00%	1.7
Riki	4	5.63%	37.93	8.03	3	66.67%	0.6	1	100.00%	0.1
Venomancer	9	12.68%	36.20	37.46	5	40.00%	1.0	4	75.00%	0.6
Underlord	14	19.72%	35.26	61.09	8	37.50%	1.6	6	50.00%	0.9
Visage	7	9.86%	35.06	27.21	4	50.00%	0.8	3	66.67%	0.4
Sven	12	16.90%	33.82	59.04	10	40.00%	2.0	2	50.00%	0.3
Kunkka	11	15.49%	32.95	43.29	2	50.00%	0.4	9	44.44%	1.3
Phoenix	8	11.27%	32.40	41.16	7	42.86%	1.4	1	100.00%	0.1
Pudge	10	14.08%	31.94	42.23	3	66.67%	0.6	7	28.57%	1.0
Troll Warlord	11	15.49%	30.59	53.89	6	50.00%	1.2	5	20.00%	0.7
Earth Spirit	6	8.45%	30.42	31.63	6	50.00%	1.2	0	0.00%	0.0
Invoker	15	21.13%	29.92	65.71	4	0.00%	0.8	11	63.64%	1.6
Storm Spirit	11	15.49%	27.89	53.70	4	75.00%	0.8	7	0.00%	1.0
Lifestealer	9	12.68%	24.85	36.98	0	0.00%	0.0	9	44.44%	1.3
Hoodwink	19	26.76%	23.84	88.08	6	16.67%	1.2	13	38.46%	1.9
Ogre Magi	12	16.90%	23.70	72.43	10	30.00%	2.0	2	50.00%	0.3
Magnus	6	8.45%	21.84	32.68	3	33.33%	0.6	3	66.67%	0.4
Doom	15	21.13%	21.50	80.30	6	16.67%	1.2	9	44.44%	1.3
Sniper	8	11.27%	21.23	42.31	2	50.00%	0.4	6	33.33%	0.9
Phantom Lancer	8	11.27%	21.14	42.50	2	100.00%	0.4	6	0.00%	0.9
Enchantress	5	7.04%	20.64	31.15	4	50.00%	0.8	1	0.00%	0.1
Omniknight	1	1.41%	20.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Oracle	1	1.41%	20.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Void Spirit	1	1.41%	20.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Marci	1	1.41%	20.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Outworld Destroyer	1	1.41%	20.22	0.00	1	100.00%	0.2	0	0.00%	0.0
Juggernaut	5	7.04%	19.91	20.61	1	0.00%	0.2	4	75.00%	0.6
Huskar	3	4.23%	17.51	4.99	0	0.00%	0.0	3	66.67%	0.4
Medusa	6	8.45%	13.55	44.28	3	33.33%	0.6	3	33.33%	0.4
Queen of Pain	6	8.45%	13.55	44.28	3	33.33%	0.6	3	33.33%	0.4
Lion	2	2.82%	11.32	11.77	2	50.00%	0.4	0	0.00%	0.0
Centaur Warrunner	1	1.41%	10.89	0.00	0	0.00%	0.0	1	100.00%	0.1
Techies	3	4.23%	10.05	21.70	2	50.00%	0.4	1	0.00%	0.1
Wraith King	4	5.63%	9.08	31.98	2	50.00%	0.4	2	0.00%	0.3
Windranger	4	5.63%	6.73	46.09	4	25.00%	0.8	0	0.00%	0.0
Brewmaster	5	7.04%	6.42	54.94	4	25.00%	0.8	1	0.00%	0.1
Night Stalker	2	2.82%	6.39	6.65	0	0.00%	0.0	2	50.00%	0.3
Zeus	11	15.49%	4.54	100.00	6	16.67%	1.2	5	0.00%	0.7
Spectre	3	4.23%	3.57	27.96	1	0.00%	0.2	2	50.00%	0.3
Legion Commander	5	7.04%	2.44	57.87	2	0.00%	0.4	3	33.33%	0.4
Shadow Demon	2	2.82%	0.00	43.54	2	0.00%	0.4	0	0.00%	0.0
Meepo	1	1.41%	0.00	11.32	0	0.00%	0.0	1	0.00%	0.1
Lone Druid	1	1.41%	0.00	11.32	0	0.00%	0.0	1	0.00%	0.1
Ancient Apparition	1	1.41%	0.00	11.32	0	0.00%	0.0	1	0.00%	0.1
Abaddon	3	4.23%	0.00	56.27	2	0.00%	0.4	1	0.00%	0.1
Anti-Mage	1	1.41%	0.00	21.02	1	0.00%	0.2	0	0.00%	0.0
Razor	1	1.41%	0.00	11.32	0	0.00%	0.0	1	0.00%	0.1
Bane	2	2.82%	0.00	43.54	2	0.00%	0.4	0	0.00%	0.0
Gyrocopter	4	5.63%	0.00	73.41	3	0.00%	0.6	1	0.00%	0.1
Skywrath Mage	1	1.41%	0.00	21.02	1	0.00%	0.2	0	0.00%	0.0
Phantom Assassin	2	2.82%	0.00	35.24	1	0.00%	0.2	1	0.00%	0.1
Tinker	2	2.82%	0.00	35.24	1	0.00%	0.2	1	0.00%	0.1
Luna	1	1.41%	0.00	21.02	1	0.00%	0.2	0	0.00%	0.0
Chen	1	1.41%	0.00	11.32	0	0.00%	0.0	1	0.00%	0.1