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): 6 - Matches: 43

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

Balance rank	Winrate	Pickrate	Contest Rate
54.7	68.1	43.4	36.9

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Tiny	34	79.07%	100.00	49.46	23	78.26%	5.8	11	54.55%	1.8
Ogre Magi	6	13.95%	98.92	11.83	6	100.00%	1.5	0	0.00%	0.0
Batrider	21	48.84%	97.85	38.71	3	100.00%	0.8	18	66.67%	3.0
Beastmaster	41	95.35%	96.77	73.12	13	61.54%	3.3	28	60.71%	4.7
Lycan	25	58.14%	95.70	55.91	6	83.33%	1.5	19	57.89%	3.2
Medusa	25	58.14%	94.62	59.14	4	75.00%	1.0	21	61.90%	3.5
Lifestealer	19	44.19%	93.55	47.31	7	85.71%	1.8	12	50.00%	2.0
Visage	15	34.88%	92.47	34.41	3	100.00%	0.8	12	58.33%	2.0
Templar Assassin	18	41.86%	91.40	48.39	6	83.33%	1.5	12	50.00%	2.0
Snapfire	24	55.81%	90.32	65.59	15	60.00%	3.8	9	55.56%	1.5
Kunkka	14	32.56%	89.25	43.01	4	100.00%	1.0	10	40.00%	1.7
Io	24	55.81%	88.17	74.19	8	62.50%	2.0	16	43.75%	2.7
Void Spirit	20	46.51%	87.10	68.82	13	46.15%	3.3	7	85.71%	1.2
Bloodseeker	25	58.14%	86.02	75.27	4	25.00%	1.0	21	61.90%	3.5
Puck	41	95.35%	84.95	96.77	19	47.37%	4.8	22	36.36%	3.7
Viper	35	81.40%	83.87	92.47	9	44.44%	2.3	26	46.15%	4.3
Dawnbreaker	34	79.07%	82.80	95.70	18	38.89%	4.5	16	56.25%	2.7
Invoker	10	23.26%	81.72	27.96	2	50.00%	0.5	8	75.00%	1.3
Pugna	3	6.98%	80.65	1.08	2	100.00%	0.5	1	100.00%	0.2
Bane	5	11.63%	79.57	18.28	4	75.00%	1.0	1	100.00%	0.2
Timbersaw	30	69.77%	78.49	94.62	10	50.00%	2.5	20	35.00%	3.3
Monkey King	23	53.49%	77.42	80.65	5	40.00%	1.3	18	50.00%	3.0
Zeus	28	65.12%	76.34	91.40	14	42.86%	3.5	14	42.86%	2.3
Chaos Knight	12	27.91%	75.27	52.69	4	25.00%	1.0	8	87.50%	1.3
Nature's Prophet	14	32.56%	74.19	63.44	7	57.14%	1.8	7	42.86%	1.2
Juggernaut	16	37.21%	73.12	69.89	6	50.00%	1.5	10	50.00%	1.7
Skywrath Mage	19	44.19%	72.04	77.42	9	55.56%	2.3	10	30.00%	1.7
Necrophos	11	25.58%	70.97	50.54	5	60.00%	1.3	6	50.00%	1.0
Marci	34	79.07%	69.89	97.85	12	41.67%	3.0	22	31.82%	3.7
Ursa	4	9.30%	68.82	12.90	2	100.00%	0.5	2	50.00%	0.3
Winter Wyvern	23	53.49%	67.74	90.32	11	36.36%	2.8	12	50.00%	2.0
Rubick	7	16.28%	66.67	35.48	6	66.67%	1.5	1	0.00%	0.2
Terrorblade	18	41.86%	65.59	78.49	7	42.86%	1.8	11	45.45%	1.8
Keeper of the Light	20	46.51%	64.52	82.80	6	33.33%	1.5	14	50.00%	2.3
Dragon Knight	6	13.95%	63.44	25.81	5	60.00%	1.3	1	100.00%	0.2
Phoenix	6	13.95%	62.37	22.58	3	66.67%	0.8	3	66.67%	0.5
Bristleback	11	25.58%	61.29	51.61	2	50.00%	0.5	9	55.56%	1.5
Sven	2	4.65%	60.22	3.23	2	100.00%	0.5	0	0.00%	0.0
Gyrocopter	5	11.63%	59.14	21.51	4	75.00%	1.0	1	0.00%	0.2
Disruptor	5	11.63%	59.14	21.51	4	75.00%	1.0	1	0.00%	0.2
Enchantress	20	46.51%	56.99	88.17	8	25.00%	2.0	12	58.33%	2.0
Faceless Void	19	44.19%	55.91	81.72	3	33.33%	0.8	16	43.75%	2.7
Storm Spirit	3	6.98%	54.84	10.75	0	0.00%	0.0	3	100.00%	0.5
Clockwerk	17	39.53%	53.76	84.95	13	38.46%	3.3	4	50.00%	0.7
Ember Spirit	14	32.56%	52.69	72.04	4	25.00%	1.0	10	60.00%	1.7
Queen of Pain	4	9.30%	51.61	19.35	3	66.67%	0.8	1	100.00%	0.2
Enigma	19	44.19%	50.54	89.25	7	42.86%	1.8	12	33.33%	2.0
Pangolier	6	13.95%	49.46	24.73	2	50.00%	0.5	4	75.00%	0.7
Doom	12	27.91%	48.39	76.34	8	37.50%	2.0	4	50.00%	0.7
Ancient Apparition	6	13.95%	47.31	37.63	3	66.67%	0.8	3	33.33%	0.5
Night Stalker	16	37.21%	46.24	83.87	3	33.33%	0.8	13	38.46%	2.2
Sniper	10	23.26%	45.16	60.22	1	0.00%	0.3	9	55.56%	1.5
Abaddon	3	6.98%	44.09	13.98	1	100.00%	0.3	2	50.00%	0.3
Phantom Assassin	7	16.28%	43.01	44.09	1	100.00%	0.3	6	33.33%	1.0
Mars	6	13.95%	41.94	39.78	2	100.00%	0.5	4	0.00%	0.7
Dazzle	8	18.60%	40.86	62.37	4	50.00%	1.0	4	25.00%	0.7
Huskar	2	4.65%	39.78	9.68	0	0.00%	0.0	2	100.00%	0.3
Razor	12	27.91%	38.71	86.02	7	42.86%	1.8	5	0.00%	0.8
Mirana	4	9.30%	37.63	36.56	4	50.00%	1.0	0	0.00%	0.0
Warlock	1	2.33%	36.56	7.53	1	100.00%	0.3	0	0.00%	0.0
Bounty Hunter	1	2.33%	36.56	7.53	1	100.00%	0.3	0	0.00%	0.0
Tusk	1	2.33%	36.56	7.53	1	100.00%	0.3	0	0.00%	0.0
Crystal Maiden	1	2.33%	36.56	2.15	1	100.00%	0.3	0	0.00%	0.0
Anti-Mage	4	9.30%	32.26	26.88	2	50.00%	0.5	2	50.00%	0.3
Weaver	6	13.95%	31.18	58.06	2	0.00%	0.5	4	75.00%	0.7
Axe	4	9.30%	30.11	41.94	3	33.33%	0.8	1	100.00%	0.2
Wraith King	4	9.30%	30.11	41.94	3	33.33%	0.8	1	100.00%	0.2
Centaur Warrunner	2	4.65%	27.96	15.05	1	100.00%	0.3	1	0.00%	0.2
Leshrac	4	9.30%	26.88	23.66	0	0.00%	0.0	4	50.00%	0.7
Alchemist	14	32.56%	25.81	98.92	7	14.29%	1.8	7	28.57%	1.2
Death Prophet	6	13.95%	24.73	56.99	0	0.00%	0.0	6	33.33%	1.0
Chen	1	2.33%	23.66	8.60	0	0.00%	0.0	1	100.00%	0.2
Drow Ranger	1	2.33%	23.66	4.30	0	0.00%	0.0	1	100.00%	0.2
Shadow Shaman	3	6.98%	21.51	46.24	3	33.33%	0.8	0	0.00%	0.0
Lina	6	13.95%	20.43	70.97	2	0.00%	0.5	4	50.00%	0.7
Sand King	5	11.63%	19.35	67.74	3	0.00%	0.8	2	100.00%	0.3
Jakiro	4	9.30%	18.28	64.52	4	25.00%	1.0	0	0.00%	0.0
Phantom Lancer	2	4.65%	17.20	17.20	0	0.00%	0.0	2	50.00%	0.3
Lone Druid	2	4.65%	17.20	17.20	0	0.00%	0.0	2	50.00%	0.3
Hoodwink	6	13.95%	15.05	87.10	6	16.67%	1.5	0	0.00%	0.0
Underlord	3	6.98%	13.98	45.16	1	0.00%	0.3	2	50.00%	0.3
Venomancer	4	9.30%	12.90	66.67	2	0.00%	0.5	2	50.00%	0.3
Slardar	8	18.60%	11.83	100.00	4	0.00%	1.0	4	0.00%	0.7
Dark Seer	1	2.33%	10.75	32.26	1	0.00%	0.3	0	0.00%	0.0
Grimstroke	2	4.65%	9.68	54.84	1	0.00%	0.3	1	0.00%	0.2
Shadow Fiend	1	2.33%	8.60	32.26	1	0.00%	0.3	0	0.00%	0.0
Oracle	1	2.33%	8.60	32.26	1	0.00%	0.3	0	0.00%	0.0
Nyx Assassin	1	2.33%	8.60	32.26	1	0.00%	0.3	0	0.00%	0.0
Luna	2	4.65%	5.38	54.84	1	0.00%	0.3	1	0.00%	0.2
Dark Willow	2	4.65%	4.30	61.29	2	0.00%	0.5	0	0.00%	0.0
Pudge	3	6.98%	3.23	79.57	3	0.00%	0.8	0	0.00%	0.0
Windranger	4	9.30%	2.15	93.55	4	0.00%	1.0	0	0.00%	0.0
Naga Siren	1	2.33%	1.08	34.41	1	0.00%	0.3	0	0.00%	0.0