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): 3 - Median hero bans (mb): 6 - Matches: 31

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

Balance rank	Winrate	Pickrate	Contest Rate
52.1	61.7	48.8	30.1

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Death Prophet	30	96.77%	100.00	65.52	12	66.67%	4.0	18	72.22%	3.0
Beastmaster	19	61.29%	98.85	48.28	3	66.67%	1.0	16	75.00%	2.7
Batrider	25	80.65%	97.70	71.26	2	100.00%	0.7	23	56.52%	3.8
Broodmother	28	90.32%	96.55	81.61	5	60.00%	1.7	23	56.52%	3.8
Anti-Mage	8	25.81%	95.40	13.79	4	100.00%	1.3	4	50.00%	0.7
Storm Spirit	13	41.94%	94.25	45.98	7	71.43%	2.3	6	66.67%	1.0
Rubick	26	83.87%	93.10	83.91	17	52.94%	5.7	9	66.67%	1.5
Io	21	67.74%	91.95	74.71	6	66.67%	2.0	15	53.33%	2.5
Pangolier	15	48.39%	90.80	56.32	4	75.00%	1.3	11	54.55%	1.8
Disruptor	22	70.97%	89.66	82.76	15	60.00%	5.0	7	28.57%	1.2
Lycan	13	41.94%	88.51	50.57	1	0.00%	0.3	12	75.00%	2.0
Naga Siren	13	41.94%	87.36	51.72	1	100.00%	0.3	12	58.33%	2.0
Marci	9	29.03%	86.21	44.83	6	66.67%	2.0	3	66.67%	0.5
Primal Beast	17	54.84%	85.06	80.46	9	55.56%	3.0	8	37.50%	1.3
Keeper of the Light	5	16.13%	83.91	11.49	1	100.00%	0.3	4	75.00%	0.7
Snapfire	17	54.84%	82.76	87.36	14	42.86%	4.7	3	100.00%	0.5
Centaur Warrunner	12	38.71%	81.61	58.62	4	75.00%	1.3	8	37.50%	1.3
Shadow Fiend	11	35.48%	80.46	60.92	7	57.14%	2.3	4	50.00%	0.7
Tusk	10	32.26%	79.31	55.17	4	50.00%	1.3	6	66.67%	1.0
Clockwerk	12	38.71%	78.16	66.67	5	40.00%	1.7	7	71.43%	1.2
Slark	17	54.84%	77.01	85.06	2	50.00%	0.7	15	46.67%	2.5
Mirana	4	12.90%	75.86	18.39	4	75.00%	1.3	0	0.00%	0.0
Hoodwink	4	12.90%	75.86	18.39	4	75.00%	1.3	0	0.00%	0.0
Doom	6	19.35%	73.56	31.03	3	66.67%	1.0	3	66.67%	0.5
Templar Assassin	6	19.35%	73.56	31.03	3	66.67%	1.0	3	66.67%	0.5
Monkey King	19	61.29%	71.26	89.66	7	42.86%	2.3	12	41.67%	2.0
Timbersaw	14	45.16%	70.11	79.31	5	40.00%	1.7	9	55.56%	1.5
Jakiro	2	6.45%	68.97	10.34	2	100.00%	0.7	0	0.00%	0.0
Magnus	2	6.45%	68.97	1.15	2	100.00%	0.7	0	0.00%	0.0
Bloodseeker	12	38.71%	66.67	68.97	2	50.00%	0.7	10	50.00%	1.7
Nature's Prophet	25	80.65%	65.52	97.70	8	50.00%	2.7	17	23.53%	2.8
Drow Ranger	20	64.52%	64.37	91.95	11	36.36%	3.7	9	44.44%	1.5
Outworld Destroyer	15	48.39%	63.22	88.51	3	66.67%	1.0	12	33.33%	2.0
Tidehunter	4	12.90%	62.07	12.64	1	100.00%	0.3	3	66.67%	0.5
Silencer	6	19.35%	60.92	43.68	4	50.00%	1.3	2	100.00%	0.3
Ember Spirit	20	64.52%	59.77	94.25	8	25.00%	2.7	12	50.00%	2.0
Puck	8	25.81%	58.62	49.43	1	0.00%	0.3	7	71.43%	1.2
Earthshaker	5	16.13%	57.47	35.63	5	60.00%	1.7	0	0.00%	0.0
Faceless Void	9	29.03%	56.32	59.77	3	66.67%	1.0	6	33.33%	1.0
Undying	25	80.65%	55.17	98.85	11	27.27%	3.7	14	35.71%	2.3
Tiny	18	58.06%	54.02	96.55	12	33.33%	4.0	6	33.33%	1.0
Invoker	10	32.26%	52.87	77.01	4	50.00%	1.3	6	33.33%	1.0
Viper	9	29.03%	51.72	67.82	2	50.00%	0.7	7	42.86%	1.2
Zeus	5	16.13%	50.57	33.33	2	50.00%	0.7	3	66.67%	0.5
Alchemist	7	22.58%	49.43	63.22	4	50.00%	1.3	3	33.33%	0.5
Dark Willow	4	12.90%	48.28	32.18	3	66.67%	1.0	1	0.00%	0.2
Ursa	8	25.81%	47.13	64.37	1	100.00%	0.3	7	28.57%	1.2
Enchantress	4	12.90%	45.98	27.59	1	0.00%	0.3	3	100.00%	0.5
Riki	4	12.90%	44.83	28.74	1	100.00%	0.3	3	33.33%	0.5
Phantom Assassin	1	3.23%	43.68	9.20	1	100.00%	0.3	0	0.00%	0.0
Dazzle	1	3.23%	43.68	9.20	1	100.00%	0.3	0	0.00%	0.0
Lina	1	3.23%	43.68	9.20	1	100.00%	0.3	0	0.00%	0.0
Crystal Maiden	1	3.23%	43.68	9.20	1	100.00%	0.3	0	0.00%	0.0
Gyrocopter	5	16.13%	39.08	62.07	5	40.00%	1.7	0	0.00%	0.0
Leshrac	18	58.06%	37.93	100.00	5	20.00%	1.7	13	23.08%	2.2
Lifestealer	10	32.26%	36.78	90.80	4	25.00%	1.3	6	33.33%	1.0
Morphling	12	38.71%	35.63	95.40	4	50.00%	1.3	8	0.00%	1.3
Terrorblade	7	22.58%	34.48	75.86	2	0.00%	0.7	5	60.00%	0.8
Sniper	8	25.81%	33.33	86.21	2	50.00%	0.7	6	16.67%	1.0
Huskar	4	12.90%	32.18	47.13	1	0.00%	0.3	3	66.67%	0.5
Ancient Apparition	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Techies	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Ogre Magi	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Void Spirit	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Treant Protector	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Oracle	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Bane	2	6.45%	31.03	26.44	2	50.00%	0.7	0	0.00%	0.0
Night Stalker	1	3.23%	22.99	4.60	0	0.00%	0.0	1	100.00%	0.2
Kunkka	1	3.23%	22.99	4.60	0	0.00%	0.0	1	100.00%	0.2
Troll Warlord	1	3.23%	22.99	4.60	0	0.00%	0.0	1	100.00%	0.2
Queen of Pain	5	16.13%	19.54	70.11	2	0.00%	0.7	3	66.67%	0.5
Luna	3	9.68%	18.39	54.02	3	33.33%	1.0	0	0.00%	0.0
Dragon Knight	3	9.68%	18.39	54.02	3	33.33%	1.0	0	0.00%	0.0
Chaos Knight	2	6.45%	16.09	16.09	0	0.00%	0.0	2	50.00%	0.3
Visage	2	6.45%	16.09	16.09	0	0.00%	0.0	2	50.00%	0.3
Abaddon	3	9.68%	13.79	34.48	0	0.00%	0.0	3	33.33%	0.5
Skywrath Mage	4	12.90%	12.64	78.16	2	0.00%	0.7	2	50.00%	0.3
Spectre	7	22.58%	11.49	93.10	2	0.00%	0.7	5	20.00%	0.8
Dark Seer	2	6.45%	10.34	57.47	1	0.00%	0.3	1	0.00%	0.2
Nyx Assassin	1	3.23%	9.20	42.53	1	0.00%	0.3	0	0.00%	0.0
Dawnbreaker	1	3.23%	9.20	42.53	1	0.00%	0.3	0	0.00%	0.0
Earth Spirit	1	3.23%	9.20	42.53	1	0.00%	0.3	0	0.00%	0.0
Enigma	2	6.45%	5.75	72.41	2	0.00%	0.7	0	0.00%	0.0
Sand King	1	3.23%	4.60	42.53	1	0.00%	0.3	0	0.00%	0.0
Wraith King	1	3.23%	4.60	42.53	1	0.00%	0.3	0	0.00%	0.0
Sven	1	3.23%	4.60	42.53	1	0.00%	0.3	0	0.00%	0.0
Mars	2	6.45%	1.15	74.71	2	0.00%	0.7	0	0.00%	0.0