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): 5 - Matches: 55

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

Balance rank	Winrate	Pickrate	Contest Rate
60.1	78.6	44.2	36.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Broodmother	52	94.55%	100.00	64.44	3	66.67%	0.8	49	63.27%	9.8
Lion	44	80.00%	98.89	62.22	38	63.16%	9.5	6	66.67%	1.2
Templar Assassin	35	63.64%	97.78	47.78	10	70.00%	2.5	25	64.00%	5.0
Doom	36	65.45%	96.67	55.56	8	62.50%	2.0	28	64.29%	5.6
Juggernaut	20	36.36%	95.56	33.33	4	50.00%	1.0	16	81.25%	3.2
Riki	15	27.27%	94.44	26.67	5	80.00%	1.3	10	70.00%	2.0
Death Prophet	25	45.45%	93.33	50.00	12	75.00%	3.0	13	38.46%	2.6
Ember Spirit	19	34.55%	92.22	38.89	8	75.00%	2.0	11	54.55%	2.2
Viper	47	85.45%	91.11	81.11	11	45.45%	2.8	36	55.56%	7.2
Terrorblade	36	65.45%	90.00	74.44	18	61.11%	4.5	18	44.44%	3.6
Tidehunter	30	54.55%	88.89	63.33	12	66.67%	3.0	18	44.44%	3.6
Puck	48	87.27%	87.78	86.67	17	58.82%	4.3	31	38.71%	6.2
Invoker	23	41.82%	86.67	53.33	6	66.67%	1.5	17	52.94%	3.4
Phoenix	36	65.45%	85.56	78.89	29	55.17%	7.3	7	14.29%	1.4
Nyx Assassin	48	87.27%	84.44	93.33	16	56.25%	4.0	32	37.50%	6.4
Spectre	40	72.73%	83.33	82.22	15	53.33%	3.8	25	44.00%	5.0
Lifestealer	29	52.73%	82.22	68.89	8	62.50%	2.0	21	47.62%	4.2
Dragon Knight	45	81.82%	81.11	91.11	22	36.36%	5.5	23	65.22%	4.6
Leshrac	39	70.91%	80.00	83.33	18	50.00%	4.5	21	42.86%	4.2
Kunkka	21	38.18%	78.89	51.11	5	80.00%	1.3	16	43.75%	3.2
Huskar	5	9.09%	77.78	11.11	0	0.00%	0.0	5	100.00%	1.0
Mirana	25	45.45%	76.67	71.11	21	52.38%	5.3	4	50.00%	0.8
Snapfire	3	5.45%	75.56	4.44	3	100.00%	0.8	0	0.00%	0.0
Batrider	22	40.00%	74.44	61.11	6	50.00%	1.5	16	56.25%	3.2
Ursa	26	47.27%	73.33	67.78	1	100.00%	0.3	25	48.00%	5.0
Medusa	24	43.64%	72.22	73.33	8	62.50%	2.0	16	37.50%	3.2
Timbersaw	40	72.73%	71.11	95.56	6	33.33%	1.5	34	44.12%	6.8
Treant Protector	7	12.73%	70.00	22.22	6	66.67%	1.5	1	100.00%	0.2
Brewmaster	10	18.18%	68.89	30.00	4	75.00%	1.0	6	50.00%	1.2
Dark Seer	13	23.64%	67.78	41.11	4	50.00%	1.0	9	66.67%	1.8
Enchantress	15	27.27%	66.67	52.22	11	54.55%	2.8	4	50.00%	0.8
Ancient Apparition	27	49.09%	65.56	80.00	15	46.67%	3.8	12	41.67%	2.4
Bristleback	10	18.18%	64.44	35.56	5	60.00%	1.3	5	60.00%	1.0
Meepo	5	9.09%	63.33	12.22	1	100.00%	0.3	4	75.00%	0.8
Legion Commander	14	25.45%	62.22	48.89	5	60.00%	1.3	9	44.44%	1.8
Sand King	3	5.45%	61.11	2.22	1	100.00%	0.3	2	100.00%	0.4
Earth Spirit	10	18.18%	60.00	45.56	9	55.56%	2.3	1	0.00%	0.2
Tusk	10	18.18%	60.00	45.56	9	55.56%	2.3	1	0.00%	0.2
Grimstroke	16	29.09%	57.78	66.67	8	37.50%	2.0	8	62.50%	1.6
Tiny	9	16.36%	56.67	34.44	3	33.33%	0.8	6	83.33%	1.2
Razor	8	14.55%	55.56	32.22	4	50.00%	1.0	4	75.00%	0.8
Luna	12	21.82%	54.44	56.67	7	57.14%	1.8	5	20.00%	1.0
Mars	25	45.45%	53.33	96.67	5	40.00%	1.3	20	30.00%	4.0
Oracle	9	16.36%	52.22	42.22	3	66.67%	0.8	6	33.33%	1.2
Necrophos	2	3.64%	51.11	3.33	1	100.00%	0.3	1	100.00%	0.2
Zeus	2	3.64%	51.11	1.11	1	100.00%	0.3	1	100.00%	0.2
Winter Wyvern	20	36.36%	48.89	90.00	12	33.33%	3.0	8	37.50%	1.6
Arc Warden	7	12.73%	47.78	31.11	2	50.00%	0.5	5	60.00%	1.0
Clockwerk	13	23.64%	46.67	72.22	7	28.57%	1.8	6	66.67%	1.2
Storm Spirit	14	25.45%	45.56	76.67	7	42.86%	1.8	7	28.57%	1.4
Axe	20	36.36%	44.44	97.78	13	30.77%	3.3	7	28.57%	1.4
Drow Ranger	8	14.55%	43.33	43.33	3	33.33%	0.8	5	60.00%	1.0
Anti-Mage	3	5.45%	42.22	13.33	1	100.00%	0.3	2	50.00%	0.4
Venomancer	4	7.27%	41.11	25.56	3	66.67%	0.8	1	0.00%	0.2
Faceless Void	14	25.45%	40.00	77.78	4	0.00%	1.0	10	60.00%	2.0
Pangolier	7	12.73%	38.89	46.67	5	40.00%	1.3	2	50.00%	0.4
Abaddon	10	18.18%	37.78	75.56	8	37.50%	2.0	2	0.00%	0.4
Phantom Lancer	20	36.36%	36.67	100.00	3	0.00%	0.8	17	35.29%	3.4
Nature's Prophet	6	10.91%	35.56	40.00	3	33.33%	0.8	3	66.67%	0.6
Lina	18	32.73%	34.44	98.89	9	11.11%	2.3	9	55.56%	1.8
Rubick	3	5.45%	33.33	16.67	2	50.00%	0.5	1	100.00%	0.2
Bloodseeker	5	9.09%	32.22	36.67	4	50.00%	1.0	1	0.00%	0.2
Chaos Knight	1	1.82%	31.11	6.67	1	100.00%	0.3	0	0.00%	0.0
Gyrocopter	1	1.82%	31.11	6.67	1	100.00%	0.3	0	0.00%	0.0
Phantom Assassin	7	12.73%	28.89	60.00	5	40.00%	1.3	2	0.00%	0.4
Io	2	3.64%	27.78	14.44	1	100.00%	0.3	1	0.00%	0.2
Centaur Warrunner	7	12.73%	26.67	54.44	2	0.00%	0.5	5	60.00%	1.0
Naga Siren	4	7.27%	25.56	21.11	0	0.00%	0.0	4	50.00%	0.8
Beastmaster	2	3.64%	24.44	20.00	2	50.00%	0.5	0	0.00%	0.0
Night Stalker	2	3.64%	24.44	20.00	2	50.00%	0.5	0	0.00%	0.0
Omniknight	1	1.82%	22.22	10.00	0	0.00%	0.0	1	100.00%	0.2
Sven	1	1.82%	22.22	10.00	0	0.00%	0.0	1	100.00%	0.2
Skywrath Mage	1	1.82%	22.22	10.00	0	0.00%	0.0	1	100.00%	0.2
Undying	4	7.27%	18.89	37.78	2	50.00%	0.5	2	0.00%	0.4
Void Spirit	6	10.91%	17.78	58.89	2	0.00%	0.5	4	50.00%	0.8
Windranger	5	9.09%	16.67	57.78	3	33.33%	0.8	2	0.00%	0.4
Shadow Demon	5	9.09%	15.56	65.56	4	25.00%	1.0	1	0.00%	0.2
Slark	2	3.64%	14.44	15.56	0	0.00%	0.0	2	50.00%	0.4
Wraith King	10	18.18%	13.33	94.44	3	0.00%	0.8	7	28.57%	1.4
Hoodwink	8	14.55%	12.22	84.44	4	0.00%	1.0	4	50.00%	0.8
Magnus	9	16.36%	11.11	92.22	4	0.00%	1.0	5	40.00%	1.0
Shadow Shaman	2	3.64%	10.00	24.44	1	0.00%	0.3	1	100.00%	0.2
Lycan	2	3.64%	10.00	24.44	1	0.00%	0.3	1	100.00%	0.2
Morphling	5	9.09%	7.78	70.00	2	0.00%	0.5	3	33.33%	0.6
Slardar	7	12.73%	6.67	88.89	3	0.00%	0.8	4	25.00%	0.8
Monkey King	7	12.73%	6.67	88.89	3	0.00%	0.8	4	25.00%	0.8
Outworld Destroyer	1	1.82%	4.44	17.78	0	0.00%	0.0	1	0.00%	0.2
Underlord	1	1.82%	3.33	28.89	1	0.00%	0.3	0	0.00%	0.0
Disruptor	1	1.82%	3.33	28.89	1	0.00%	0.3	0	0.00%	0.0
Elder Titan	4	7.27%	1.11	86.67	4	0.00%	1.0	0	0.00%	0.0