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
59.4	77.3	41.8	41.0

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Nyx Assassin	13	30.23%	100.00	11.22	4	100.00%	1.0	9	77.78%	1.5
Tiny	42	97.67%	98.98	77.55	29	65.52%	7.3	13	38.46%	2.2
Marci	32	74.42%	97.96	62.24	15	60.00%	3.8	17	70.59%	2.8
Beastmaster	25	58.14%	96.94	54.08	5	60.00%	1.3	20	65.00%	3.3
Windranger	9	20.93%	95.92	16.33	7	85.71%	1.8	2	50.00%	0.3
Earth Spirit	11	25.58%	94.90	24.49	6	83.33%	1.5	5	60.00%	0.8
Nature's Prophet	23	53.49%	93.88	55.10	11	72.73%	2.8	12	41.67%	2.0
Enigma	15	34.88%	92.86	38.78	5	80.00%	1.3	10	60.00%	1.7
Puck	39	90.70%	91.84	92.86	15	60.00%	3.8	24	41.67%	4.0
Warlock	25	58.14%	90.82	66.33	16	62.50%	4.0	9	44.44%	1.5
Dazzle	4	9.30%	89.80	8.16	3	100.00%	0.8	1	100.00%	0.2
Razor	27	62.79%	88.78	74.49	16	68.75%	4.0	11	18.18%	1.8
Faceless Void	27	62.79%	87.76	71.43	7	71.43%	1.8	20	45.00%	3.3
Viper	21	48.84%	86.73	56.12	6	50.00%	1.5	15	66.67%	2.5
Dark Seer	9	20.93%	85.71	14.29	1	100.00%	0.3	8	75.00%	1.3
Monkey King	40	93.02%	84.69	97.96	9	55.56%	2.3	31	41.94%	5.2
Visage	21	48.84%	83.67	63.27	11	54.55%	2.8	10	60.00%	1.7
Pangolier	26	60.47%	82.65	83.67	8	25.00%	2.0	18	72.22%	3.0
Underlord	7	16.28%	81.63	22.45	4	75.00%	1.0	3	66.67%	0.5
Juggernaut	19	44.19%	80.61	69.39	8	62.50%	2.0	11	36.36%	1.8
Rubick	10	23.26%	79.59	39.80	6	50.00%	1.5	4	100.00%	0.7
Treant Protector	18	41.86%	78.57	72.45	12	50.00%	3.0	6	50.00%	1.0
Lifestealer	7	16.28%	77.55	15.31	1	100.00%	0.3	6	66.67%	1.0
Winter Wyvern	20	46.51%	76.53	79.59	9	44.44%	2.3	11	54.55%	1.8
Batrider	16	37.21%	75.51	60.20	1	100.00%	0.3	15	46.67%	2.5
Ember Spirit	16	37.21%	74.49	67.35	6	50.00%	1.5	10	50.00%	1.7
Bristleback	6	13.95%	73.47	23.47	4	75.00%	1.0	2	50.00%	0.3
Ursa	20	46.51%	72.45	84.69	6	50.00%	1.5	14	42.86%	2.3
Abaddon	3	6.98%	71.43	2.04	1	100.00%	0.3	2	100.00%	0.3
Chaos Knight	17	39.53%	70.41	73.47	6	50.00%	1.5	11	45.45%	1.8
Tusk	8	18.60%	69.39	28.57	3	66.67%	0.8	5	60.00%	0.8
Alchemist	18	41.86%	68.37	80.61	6	33.33%	1.5	12	58.33%	2.0
Dawnbreaker	30	69.77%	67.35	100.00	10	30.00%	2.5	20	45.00%	3.3
Keeper of the Light	18	41.86%	66.33	85.71	5	20.00%	1.3	13	61.54%	2.2
Lina	18	41.86%	65.31	86.73	5	60.00%	1.3	13	30.77%	2.2
Pudge	13	30.23%	64.29	65.31	6	50.00%	1.5	7	42.86%	1.2
Void Spirit	16	37.21%	63.27	81.63	7	42.86%	1.8	9	44.44%	1.5
Death Prophet	23	53.49%	62.24	96.94	9	22.22%	2.3	14	57.14%	2.3
Terrorblade	19	44.19%	61.22	90.82	3	33.33%	0.8	16	43.75%	2.7
Mars	9	20.93%	60.20	53.06	7	42.86%	1.8	2	100.00%	0.3
Brewmaster	19	44.19%	59.18	94.90	7	28.57%	1.8	12	50.00%	2.0
Timbersaw	15	34.88%	58.16	78.57	4	25.00%	1.0	11	54.55%	1.8
Lycan	7	16.28%	57.14	41.84	4	50.00%	1.0	3	66.67%	0.5
Spectre	15	34.88%	56.12	88.78	8	25.00%	2.0	7	71.43%	1.2
Morphling	17	39.53%	55.10	91.84	4	0.00%	1.0	13	61.54%	2.2
Bane	2	4.65%	54.08	7.14	1	100.00%	0.3	1	100.00%	0.2
Enchantress	6	13.95%	53.06	37.76	3	66.67%	0.8	3	33.33%	0.5
Phoenix	11	25.58%	52.04	76.53	7	28.57%	1.8	4	75.00%	0.7
Zeus	13	30.23%	51.02	87.76	6	50.00%	1.5	7	14.29%	1.2
Weaver	10	23.26%	50.00	68.37	5	20.00%	1.3	5	80.00%	0.8
Templar Assassin	8	18.60%	48.98	52.04	3	66.67%	0.8	5	20.00%	0.8
Naga Siren	3	6.98%	47.96	10.20	1	100.00%	0.3	2	50.00%	0.3
Bloodseeker	7	16.28%	46.94	42.86	1	100.00%	0.3	6	33.33%	1.0
Anti-Mage	9	20.93%	45.92	51.02	0	0.00%	0.0	9	44.44%	1.5
Ogre Magi	4	9.30%	44.90	25.51	3	66.67%	0.8	1	0.00%	0.2
Medusa	8	18.60%	43.88	59.18	4	50.00%	1.0	4	25.00%	0.7
Night Stalker	2	4.65%	42.86	9.18	0	0.00%	0.0	2	100.00%	0.3
Kunkka	7	16.28%	41.84	48.98	2	50.00%	0.5	5	40.00%	0.8
Lone Druid	3	6.98%	40.82	17.35	2	50.00%	0.5	1	100.00%	0.2
Slark	1	2.33%	39.80	6.12	1	100.00%	0.3	0	0.00%	0.0
Huskar	1	2.33%	39.80	6.12	1	100.00%	0.3	0	0.00%	0.0
Luna	1	2.33%	39.80	6.12	1	100.00%	0.3	0	0.00%	0.0
Tinker	1	2.33%	39.80	6.12	1	100.00%	0.3	0	0.00%	0.0
Shadow Shaman	12	27.91%	35.71	95.92	7	14.29%	1.8	5	60.00%	0.8
Doom	9	20.93%	34.69	82.65	4	25.00%	1.0	5	40.00%	0.8
Dragon Knight	10	23.26%	33.67	89.80	4	25.00%	1.0	6	33.33%	1.0
Hoodwink	4	9.30%	32.65	40.82	3	33.33%	0.8	1	100.00%	0.2
Pugna	8	18.60%	31.63	64.29	1	100.00%	0.3	7	14.29%	1.2
Queen of Pain	10	23.26%	30.61	93.88	5	40.00%	1.3	5	0.00%	0.8
Clockwerk	7	16.28%	29.59	70.41	3	33.33%	0.8	4	25.00%	0.7
Centaur Warrunner	2	4.65%	28.57	21.43	2	50.00%	0.5	0	0.00%	0.0
Sven	2	4.65%	28.57	21.43	2	50.00%	0.5	0	0.00%	0.0
Oracle	1	2.33%	26.53	1.02	0	0.00%	0.0	1	100.00%	0.2
Grimstroke	5	11.63%	25.51	47.96	1	0.00%	0.3	4	50.00%	0.7
Disruptor	4	9.30%	24.49	46.94	2	0.00%	0.5	2	100.00%	0.3
Lion	3	6.98%	23.47	44.90	3	33.33%	0.8	0	0.00%	0.0
Io	3	6.98%	23.47	44.90	3	33.33%	0.8	0	0.00%	0.0
Crystal Maiden	4	9.30%	21.43	61.22	4	25.00%	1.0	0	0.00%	0.0
Snapfire	2	4.65%	20.41	13.27	0	0.00%	0.0	2	50.00%	0.3
Ancient Apparition	2	4.65%	20.41	13.27	0	0.00%	0.0	2	50.00%	0.3
Phantom Lancer	3	6.98%	18.37	27.55	0	0.00%	0.0	3	33.33%	0.5
Invoker	3	6.98%	18.37	27.55	0	0.00%	0.0	3	33.33%	0.5
Leshrac	4	9.30%	16.33	45.92	0	0.00%	0.0	4	25.00%	0.7
Tidehunter	1	2.33%	15.31	36.73	1	0.00%	0.3	0	0.00%	0.0
Wraith King	2	4.65%	14.29	58.16	2	0.00%	0.5	0	0.00%	0.0
Sand King	1	2.33%	13.27	36.73	1	0.00%	0.3	0	0.00%	0.0
Storm Spirit	1	2.33%	12.24	19.39	0	0.00%	0.0	1	0.00%	0.2
Elder Titan	1	2.33%	11.22	36.73	1	0.00%	0.3	0	0.00%	0.0
Lich	1	2.33%	11.22	36.73	1	0.00%	0.3	0	0.00%	0.0
Mirana	2	4.65%	9.18	50.00	1	0.00%	0.3	1	0.00%	0.2
Omniknight	1	2.33%	8.16	36.73	1	0.00%	0.3	0	0.00%	0.0
Phantom Assassin	5	11.63%	7.14	98.98	3	0.00%	0.8	2	0.00%	0.3
Broodmother	1	2.33%	6.12	36.73	1	0.00%	0.3	0	0.00%	0.0
Jakiro	1	2.33%	6.12	36.73	1	0.00%	0.3	0	0.00%	0.0
Earthshaker	2	4.65%	4.08	58.16	2	0.00%	0.5	0	0.00%	0.0
Troll Warlord	1	2.33%	3.06	36.73	1	0.00%	0.3	0	0.00%	0.0
Silencer	1	2.33%	2.04	19.39	0	0.00%	0.0	1	0.00%	0.2
Necrophos	3	6.98%	1.02	76.53	2	0.00%	0.5	1	0.00%	0.2