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): 5 - Matches: 33

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

Balance rank	Winrate	Pickrate	Contest Rate
53.8	72.6	33.6	37.8

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Puck	33	100.00%	100.00	57.45	15	73.33%	5.0	18	72.22%	3.6
Alchemist	17	51.52%	98.94	46.81	3	66.67%	1.0	14	78.57%	2.8
Razor	10	30.30%	97.87	27.66	3	100.00%	1.0	7	71.43%	1.4
Storm Spirit	12	36.36%	96.81	38.30	3	100.00%	1.0	9	66.67%	1.8
Beastmaster	16	48.48%	95.74	48.94	5	40.00%	1.7	11	100.00%	2.2
Broodmother	14	42.42%	94.68	41.49	1	0.00%	0.3	13	84.62%	2.6
Dragon Knight	7	21.21%	93.62	18.09	2	100.00%	0.7	5	80.00%	1.0
Lina	4	12.12%	92.55	15.96	3	100.00%	1.0	1	100.00%	0.2
Nature's Prophet	9	27.27%	91.49	39.36	6	83.33%	2.0	3	33.33%	0.6
Lycan	22	66.67%	90.43	72.34	3	33.33%	1.0	19	63.16%	3.8
Void Spirit	21	63.64%	89.36	75.53	8	62.50%	2.7	13	46.15%	2.6
Juggernaut	13	39.39%	88.30	53.19	4	75.00%	1.3	9	55.56%	1.8
Morphling	22	66.67%	87.23	77.66	8	50.00%	2.7	14	57.14%	2.8
Earth Spirit	24	72.73%	86.17	78.72	15	46.67%	5.0	9	66.67%	1.8
Shadow Demon	3	9.09%	85.11	1.06	3	100.00%	1.0	0	0.00%	0.0
Troll Warlord	18	54.55%	84.04	69.15	9	66.67%	3.0	9	33.33%	1.8
Spirit Breaker	5	15.15%	82.98	19.15	2	100.00%	0.7	3	66.67%	0.6
Skywrath Mage	3	9.09%	81.91	17.02	2	100.00%	0.7	1	100.00%	0.2
Mars	27	81.82%	80.85	90.43	11	45.45%	3.7	16	43.75%	3.2
Death Prophet	29	87.88%	79.79	96.81	9	55.56%	3.0	20	30.00%	4.0
Outworld Destroyer	10	30.30%	78.72	47.87	1	100.00%	0.3	9	55.56%	1.8
Phantom Lancer	10	30.30%	77.66	51.06	3	66.67%	1.0	7	57.14%	1.4
Wraith King	10	30.30%	76.60	55.32	5	60.00%	1.7	5	60.00%	1.0
Ursa	14	42.42%	75.53	64.89	3	66.67%	1.0	11	45.45%	2.2
Viper	15	45.45%	74.47	74.47	7	57.14%	2.3	8	37.50%	1.6
Pangolier	21	63.64%	73.40	86.17	11	45.45%	3.7	10	40.00%	2.0
Lone Druid	10	30.30%	72.34	54.26	2	0.00%	0.7	8	87.50%	1.6
Crystal Maiden	4	12.12%	71.28	29.79	4	75.00%	1.3	0	0.00%	0.0
Sand King	4	12.12%	71.28	29.79	4	75.00%	1.3	0	0.00%	0.0
Nyx Assassin	2	6.06%	69.15	8.51	2	100.00%	0.7	0	0.00%	0.0
Timbersaw	23	69.70%	68.09	97.87	9	44.44%	3.0	14	28.57%	2.8
Monkey King	22	66.67%	67.02	93.62	4	50.00%	1.3	18	33.33%	3.6
Io	25	75.76%	65.96	98.94	4	50.00%	1.3	21	28.57%	4.2
Phoenix	16	48.48%	64.89	87.23	10	30.00%	3.3	6	66.67%	1.2
Slardar	2	6.06%	63.83	9.57	1	100.00%	0.3	1	100.00%	0.2
Keeper of the Light	2	6.06%	63.83	11.70	1	100.00%	0.3	1	100.00%	0.2
Tusk	18	54.55%	61.70	94.68	13	38.46%	4.3	5	20.00%	1.0
Templar Assassin	10	30.30%	60.64	63.83	3	0.00%	1.0	7	85.71%	1.4
Abaddon	6	18.18%	59.57	50.00	5	60.00%	1.7	1	0.00%	0.2
Lion	18	54.55%	58.51	95.74	14	35.71%	4.7	4	25.00%	0.8
Tiny	8	24.24%	57.45	62.77	7	42.86%	2.3	1	100.00%	0.2
Enigma	6	18.18%	56.38	42.55	1	100.00%	0.3	5	40.00%	1.0
Anti-Mage	8	24.24%	55.32	56.38	0	0.00%	0.0	8	50.00%	1.6
Brewmaster	3	9.09%	54.26	30.85	3	66.67%	1.0	0	0.00%	0.0
Ember Spirit	10	30.30%	53.19	76.60	5	40.00%	1.7	5	40.00%	1.0
Ogre Magi	3	9.09%	52.13	20.21	1	100.00%	0.3	2	50.00%	0.4
Phantom Assassin	9	27.27%	51.06	67.02	3	33.33%	1.0	6	50.00%	1.2
Queen of Pain	6	18.18%	50.00	52.13	2	50.00%	0.7	4	50.00%	0.8
Medusa	2	6.06%	48.94	10.64	0	0.00%	0.0	2	100.00%	0.4
Batrider	11	33.33%	47.87	79.79	3	66.67%	1.0	8	12.50%	1.6
Rubick	7	21.21%	46.81	68.09	6	33.33%	2.0	1	100.00%	0.2
Lifestealer	3	9.09%	45.74	31.91	2	50.00%	0.7	1	100.00%	0.2
Bloodseeker	8	24.24%	44.68	71.28	3	33.33%	1.0	5	40.00%	1.0
Leshrac	8	24.24%	44.68	71.28	3	33.33%	1.0	5	40.00%	1.0
Centaur Warrunner	1	3.03%	42.55	14.89	1	100.00%	0.3	0	0.00%	0.0
Bounty Hunter	1	3.03%	42.55	3.19	1	100.00%	0.3	0	0.00%	0.0
Naga Siren	1	3.03%	42.55	3.19	1	100.00%	0.3	0	0.00%	0.0
Omniknight	1	3.03%	42.55	14.89	1	100.00%	0.3	0	0.00%	0.0
Bane	1	3.03%	42.55	14.89	1	100.00%	0.3	0	0.00%	0.0
Oracle	11	33.33%	37.23	88.30	3	33.33%	1.0	8	25.00%	1.6
Huskar	9	27.27%	36.17	80.85	4	25.00%	1.3	5	40.00%	1.0
Grimstroke	15	45.45%	35.11	100.00	12	16.67%	4.0	3	66.67%	0.6
Weaver	11	33.33%	34.04	89.36	4	25.00%	1.3	7	28.57%	1.4
Kunkka	8	24.24%	32.98	73.40	1	0.00%	0.3	7	42.86%	1.4
Enchantress	2	6.06%	31.91	24.47	1	100.00%	0.3	1	0.00%	0.2
Terrorblade	2	6.06%	31.91	24.47	1	100.00%	0.3	1	0.00%	0.2
Shadow Shaman	2	6.06%	31.91	24.47	1	100.00%	0.3	1	0.00%	0.2
Shadow Fiend	2	6.06%	31.91	24.47	1	100.00%	0.3	1	0.00%	0.2
Ancient Apparition	6	18.18%	27.66	65.96	3	33.33%	1.0	3	33.33%	0.6
Elder Titan	9	27.27%	26.60	84.04	2	50.00%	0.7	7	14.29%	1.4
Tidehunter	9	27.27%	26.60	84.04	2	50.00%	0.7	7	14.29%	1.4
Invoker	6	18.18%	24.47	61.70	0	0.00%	0.0	6	33.33%	1.2
Disruptor	2	6.06%	23.40	37.23	2	50.00%	0.7	0	0.00%	0.0
Doom	2	6.06%	23.40	37.23	2	50.00%	0.7	0	0.00%	0.0
Slark	2	6.06%	23.40	37.23	2	50.00%	0.7	0	0.00%	0.0
Mirana	2	6.06%	23.40	37.23	2	50.00%	0.7	0	0.00%	0.0
Lich	1	3.03%	19.15	7.45	0	0.00%	0.0	1	100.00%	0.2
Riki	1	3.03%	19.15	7.45	0	0.00%	0.0	1	100.00%	0.2
Warlock	1	3.03%	19.15	7.45	0	0.00%	0.0	1	100.00%	0.2
Winter Wyvern	1	3.03%	19.15	7.45	0	0.00%	0.0	1	100.00%	0.2
Windranger	8	24.24%	14.89	91.49	3	0.00%	1.0	5	40.00%	1.0
Arc Warden	2	6.06%	13.83	26.60	0	0.00%	0.0	2	50.00%	0.4
Legion Commander	2	6.06%	13.83	26.60	0	0.00%	0.0	2	50.00%	0.4
Underlord	6	18.18%	11.70	85.11	5	20.00%	1.7	1	0.00%	0.2
Gyrocopter	2	6.06%	10.64	40.43	1	0.00%	0.3	1	100.00%	0.2
Snapfire	3	9.09%	9.57	60.64	2	0.00%	0.7	1	100.00%	0.2
Pugna	6	18.18%	8.51	92.55	3	0.00%	1.0	3	33.33%	0.6
Zeus	1	3.03%	7.45	32.98	0	0.00%	0.0	1	0.00%	0.2
Dark Seer	1	3.03%	6.38	45.74	1	0.00%	0.3	0	0.00%	0.0
Sniper	1	3.03%	6.38	45.74	1	0.00%	0.3	0	0.00%	0.0
Earthshaker	2	6.06%	4.26	59.57	1	0.00%	0.3	1	0.00%	0.2
Meepo	1	3.03%	3.19	45.74	1	0.00%	0.3	0	0.00%	0.0
Witch Doctor	2	6.06%	2.13	59.57	1	0.00%	0.3	1	0.00%	0.2
Dark Willow	3	9.09%	1.06	84.04	3	0.00%	1.0	0	0.00%	0.0