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): 4 - Matches: 49

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

Balance rank	Winrate	Pickrate	Contest Rate
54.9	72.5	38.5	35.2

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Puck	46	93.88%	100.00	78.95	20	55.00%	5.0	26	61.54%	6.5
Shadow Shaman	9	18.37%	98.95	12.63	6	83.33%	1.5	3	100.00%	0.8
Marci	45	91.84%	97.89	81.05	13	69.23%	3.3	32	46.88%	8.0
Mars	11	22.45%	96.84	29.47	9	77.78%	2.3	2	100.00%	0.5
Kunkka	12	24.49%	95.79	17.89	4	100.00%	1.0	8	62.50%	2.0
Dawnbreaker	46	93.88%	94.74	85.26	13	53.85%	3.3	33	54.55%	8.3
Night Stalker	23	46.94%	93.68	49.47	3	66.67%	0.8	20	65.00%	5.0
Winter Wyvern	40	81.63%	92.63	80.00	16	62.50%	4.0	24	45.83%	6.0
Timbersaw	20	40.82%	91.58	46.32	4	75.00%	1.0	16	62.50%	4.0
Keeper of the Light	19	38.78%	90.53	45.26	5	80.00%	1.3	14	57.14%	3.5
Tiny	49	100.00%	89.47	94.74	32	43.75%	8.0	17	70.59%	4.3
Death Prophet	36	73.47%	88.42	84.21	18	50.00%	4.5	18	55.56%	4.5
Snapfire	15	30.61%	87.37	43.16	11	63.64%	2.8	4	75.00%	1.0
Razor	37	75.51%	86.32	89.47	19	47.37%	4.8	18	55.56%	4.5
Dazzle	32	65.31%	85.26	83.16	22	54.55%	5.5	10	40.00%	2.5
Templar Assassin	22	44.90%	84.21	61.05	10	60.00%	2.5	12	50.00%	3.0
Pudge	6	12.24%	83.16	13.68	5	80.00%	1.3	1	100.00%	0.3
Enchantress	25	51.02%	82.11	68.42	14	57.14%	3.5	11	45.45%	2.8
Beastmaster	29	59.18%	81.05	82.11	9	55.56%	2.3	20	45.00%	5.0
Lina	8	16.33%	80.00	32.63	6	83.33%	1.5	2	0.00%	0.5
Faceless Void	32	65.31%	78.95	90.53	6	50.00%	1.5	26	46.15%	6.5
Viper	43	87.76%	77.89	100.00	14	42.86%	3.5	29	41.38%	7.3
Brewmaster	7	14.29%	76.84	15.79	2	100.00%	0.5	5	60.00%	1.3
Spectre	11	22.45%	75.79	40.00	3	33.33%	0.8	8	87.50%	2.0
Ember Spirit	18	36.73%	74.74	55.79	2	100.00%	0.5	16	43.75%	4.0
Morphling	17	34.69%	73.68	56.84	5	40.00%	1.3	12	66.67%	3.0
Bloodseeker	27	55.10%	72.63	92.63	9	55.56%	2.3	18	33.33%	4.5
Chen	21	42.86%	71.58	72.63	6	50.00%	1.5	15	46.67%	3.8
Bristleback	26	53.06%	70.53	91.58	10	50.00%	2.5	16	37.50%	4.0
Juggernaut	26	53.06%	69.47	88.42	6	16.67%	1.5	20	60.00%	5.0
Storm Spirit	16	32.65%	68.42	65.26	10	50.00%	2.5	6	50.00%	1.5
Lone Druid	6	12.24%	67.37	16.84	2	100.00%	0.5	4	50.00%	1.0
Terrorblade	20	40.82%	66.32	70.53	3	33.33%	0.8	17	52.94%	4.3
Chaos Knight	19	38.78%	65.26	75.79	9	44.44%	2.3	10	50.00%	2.5
Doom	6	12.24%	64.21	33.68	6	66.67%	1.5	0	0.00%	0.0
Monkey King	14	28.57%	63.16	53.68	3	66.67%	0.8	11	45.45%	2.8
Visage	13	26.53%	62.11	52.63	4	50.00%	1.0	9	55.56%	2.3
Zeus	15	30.61%	61.05	64.21	4	25.00%	1.0	11	63.64%	2.8
Troll Warlord	6	12.24%	60.00	31.58	3	66.67%	0.8	3	66.67%	0.8
Phantom Lancer	6	12.24%	60.00	31.58	3	66.67%	0.8	3	66.67%	0.8
Earth Spirit	10	20.41%	57.89	54.74	10	50.00%	2.5	0	0.00%	0.0
Nyx Assassin	13	26.53%	56.84	67.37	11	45.45%	2.8	2	50.00%	0.5
Phoenix	9	18.37%	55.79	47.37	6	50.00%	1.5	3	66.67%	0.8
Weaver	7	14.29%	54.74	34.74	1	100.00%	0.3	6	50.00%	1.5
Batrider	23	46.94%	53.68	95.79	2	0.00%	0.5	21	42.86%	5.3
Abaddon	5	10.20%	52.63	18.95	1	100.00%	0.3	4	50.00%	1.0
Void Spirit	22	44.90%	51.58	98.95	10	20.00%	2.5	12	50.00%	3.0
Enigma	19	38.78%	50.53	96.84	7	42.86%	1.8	12	16.67%	3.0
Dark Seer	3	6.12%	49.47	9.47	1	100.00%	0.3	2	50.00%	0.5
Queen of Pain	9	18.37%	48.42	63.16	6	50.00%	1.5	3	0.00%	0.8
Lycan	14	28.57%	47.37	86.32	4	25.00%	1.0	10	40.00%	2.5
Ursa	11	22.45%	46.32	71.58	3	0.00%	0.8	8	62.50%	2.0
Lifestealer	4	8.16%	45.26	24.21	1	100.00%	0.3	3	33.33%	0.8
Necrophos	8	16.33%	44.21	58.95	5	40.00%	1.3	3	33.33%	0.8
Tusk	7	14.29%	43.16	57.89	6	33.33%	1.5	1	100.00%	0.3
Clockwerk	3	6.12%	42.11	20.00	2	50.00%	0.5	1	100.00%	0.3
Pangolier	9	18.37%	41.05	62.11	2	50.00%	0.5	7	28.57%	1.8
Io	1	2.04%	40.00	8.42	1	100.00%	0.3	0	0.00%	0.0
Warlock	8	16.33%	38.95	66.32	4	25.00%	1.0	4	50.00%	1.0
Earthshaker	10	20.41%	37.89	93.68	9	22.22%	2.3	1	100.00%	0.3
Naga Siren	2	4.08%	36.84	11.58	1	100.00%	0.3	1	0.00%	0.3
Venomancer	2	4.08%	36.84	11.58	1	100.00%	0.3	1	0.00%	0.3
Nature's Prophet	8	16.33%	34.74	74.74	3	33.33%	0.8	5	20.00%	1.3
Ancient Apparition	8	16.33%	34.74	74.74	3	33.33%	0.8	5	20.00%	1.3
Jakiro	2	4.08%	32.63	28.42	2	50.00%	0.5	0	0.00%	0.0
Oracle	2	4.08%	32.63	28.42	2	50.00%	0.5	0	0.00%	0.0
Lion	2	4.08%	32.63	28.42	2	50.00%	0.5	0	0.00%	0.0
Sniper	2	4.08%	32.63	28.42	2	50.00%	0.5	0	0.00%	0.0
Tidehunter	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Witch Doctor	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Meepo	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Magnus	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Legion Commander	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Lich	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Hoodwink	1	2.04%	28.42	7.37	0	0.00%	0.0	1	100.00%	0.3
Dragon Knight	7	14.29%	21.05	76.84	5	20.00%	1.3	2	50.00%	0.5
Windranger	3	6.12%	20.00	38.95	2	50.00%	0.5	1	0.00%	0.3
Crystal Maiden	3	6.12%	20.00	38.95	2	50.00%	0.5	1	0.00%	0.3
Medusa	9	18.37%	17.89	87.37	1	0.00%	0.3	8	25.00%	2.0
Rubick	5	10.20%	16.84	60.00	3	33.33%	0.8	2	0.00%	0.5
Outworld Destroyer	2	4.08%	15.79	14.74	0	0.00%	0.0	2	50.00%	0.5
Skywrath Mage	8	16.33%	14.74	97.89	7	14.29%	1.8	1	0.00%	0.3
Anti-Mage	4	8.16%	13.68	44.21	0	0.00%	0.0	4	25.00%	1.0
Phantom Assassin	3	6.12%	12.63	42.11	1	0.00%	0.3	2	50.00%	0.5
Underlord	3	6.12%	12.63	42.11	1	0.00%	0.3	2	50.00%	0.5
Invoker	4	8.16%	10.53	51.58	1	0.00%	0.3	3	33.33%	0.8
Alchemist	3	6.12%	9.47	50.53	2	0.00%	0.5	1	100.00%	0.3
Dark Willow	1	2.04%	8.42	23.16	0	0.00%	0.0	1	0.00%	0.3
Vengeful Spirit	1	2.04%	7.37	36.84	1	0.00%	0.3	0	0.00%	0.0
Mirana	2	4.08%	6.32	48.42	1	0.00%	0.3	1	0.00%	0.3
Bounty Hunter	1	2.04%	5.26	23.16	0	0.00%	0.0	1	0.00%	0.3
Gyrocopter	1	2.04%	4.21	36.84	1	0.00%	0.3	0	0.00%	0.0
Wraith King	3	6.12%	3.16	77.89	3	0.00%	0.8	0	0.00%	0.0
Axe	1	2.04%	2.11	23.16	0	0.00%	0.0	1	0.00%	0.3
Grimstroke	3	6.12%	1.05	70.53	2	0.00%	0.5	1	0.00%	0.3