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): 7 - Matches: 49

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

Balance rank	Winrate	Pickrate	Contest Rate
55.9	75.4	36.4	36.4

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Templar Assassin	45	91.84%	100.00	61.70	28	67.86%	9.3	17	58.82%	2.4
Death Prophet	48	97.96%	98.94	82.98	13	53.85%	4.3	35	57.14%	5.0
Storm Spirit	15	30.61%	97.87	32.98	6	83.33%	2.0	9	66.67%	1.3
Sand King	27	55.10%	96.81	52.13	5	80.00%	1.7	22	59.09%	3.1
Mars	39	79.59%	95.74	77.66	23	60.87%	7.7	16	50.00%	2.3
Dragon Knight	35	71.43%	94.68	74.47	26	61.54%	8.7	9	44.44%	1.3
Monkey King	27	55.10%	93.62	60.64	15	60.00%	5.0	12	58.33%	1.7
Enchantress	29	59.18%	92.55	78.72	11	45.45%	3.7	18	61.11%	2.6
Nyx Assassin	12	24.49%	91.49	41.49	4	75.00%	1.3	8	62.50%	1.1
Hoodwink	22	44.90%	90.43	69.15	18	55.56%	6.0	4	50.00%	0.6
Snapfire	22	44.90%	89.36	70.21	15	60.00%	5.0	7	28.57%	1.0
Troll Warlord	3	6.12%	88.30	14.89	3	100.00%	1.0	0	0.00%	0.0
Phantom Lancer	17	34.69%	87.23	51.06	0	0.00%	0.0	17	58.82%	2.4
Medusa	28	57.14%	86.17	84.04	10	40.00%	3.3	18	55.56%	2.6
Kunkka	38	77.55%	85.11	94.68	8	62.50%	2.7	30	33.33%	4.3
Keeper of the Light	9	18.37%	84.04	40.43	6	66.67%	2.0	3	66.67%	0.4
Razor	32	65.31%	82.98	90.43	13	38.46%	4.3	19	52.63%	2.7
Tusk	11	22.45%	81.91	43.62	5	40.00%	1.7	6	100.00%	0.9
Outworld Destroyer	14	28.57%	80.85	50.00	3	66.67%	1.0	11	54.55%	1.6
Terrorblade	26	53.06%	79.79	81.91	6	66.67%	2.0	20	35.00%	2.9
Bane	19	38.78%	78.72	75.53	13	53.85%	4.3	6	33.33%	0.9
Invoker	21	42.86%	77.66	73.40	3	33.33%	1.0	18	55.56%	2.6
Batrider	35	71.43%	76.60	95.74	4	0.00%	1.3	31	51.61%	4.4
Io	28	57.14%	75.53	86.17	6	33.33%	2.0	22	50.00%	3.1
Lina	8	16.33%	74.47	34.04	4	75.00%	1.3	4	50.00%	0.6
Weaver	18	36.73%	73.40	71.28	8	62.50%	2.7	10	30.00%	1.4
Pangolier	34	69.39%	72.34	97.87	9	11.11%	3.0	25	60.00%	3.6
Pugna	10	20.41%	71.28	44.68	5	40.00%	1.7	5	100.00%	0.7
Mirana	10	20.41%	70.21	47.87	7	57.14%	2.3	3	66.67%	0.4
Ogre Magi	14	28.57%	69.15	56.38	9	44.44%	3.0	5	80.00%	0.7
Spirit Breaker	7	14.29%	68.09	31.91	5	60.00%	1.7	2	100.00%	0.3
Viper	45	91.84%	67.02	100.00	11	27.27%	3.7	34	41.18%	4.9
Necrophos	17	34.69%	65.96	64.89	5	40.00%	1.7	12	58.33%	1.7
Huskar	3	6.12%	64.89	11.70	1	100.00%	0.3	2	100.00%	0.3
Tiny	29	59.18%	63.83	92.55	19	42.11%	6.3	10	30.00%	1.4
Puck	16	32.65%	62.77	63.83	4	75.00%	1.3	12	33.33%	1.7
Ember Spirit	35	71.43%	61.70	98.94	17	29.41%	5.7	18	50.00%	2.6
Bloodseeker	4	8.16%	60.64	20.21	2	100.00%	0.7	2	50.00%	0.3
Ursa	4	8.16%	60.64	20.21	2	100.00%	0.7	2	50.00%	0.3
Venomancer	12	24.49%	58.51	55.32	6	50.00%	2.0	6	50.00%	0.9
Shadow Demon	15	30.61%	57.45	72.34	7	28.57%	2.3	8	75.00%	1.1
Witch Doctor	2	4.08%	56.38	10.64	2	100.00%	0.7	0	0.00%	0.0
Abaddon	5	10.20%	55.32	26.60	4	75.00%	1.3	1	0.00%	0.1
Gyrocopter	12	24.49%	54.26	68.09	10	40.00%	3.3	2	100.00%	0.3
Anti-Mage	11	22.45%	53.19	53.19	3	66.67%	1.0	8	37.50%	1.1
Grimstroke	21	42.86%	52.13	89.36	8	37.50%	2.7	13	38.46%	1.9
Omniknight	6	12.24%	51.06	30.85	2	50.00%	0.7	4	75.00%	0.6
Dark Seer	5	10.20%	50.00	27.66	3	66.67%	1.0	2	50.00%	0.3
Ancient Apparition	10	20.41%	48.94	54.26	5	60.00%	1.7	5	20.00%	0.7
Riki	2	4.08%	47.87	4.26	1	100.00%	0.3	1	100.00%	0.1
Tidehunter	14	28.57%	46.81	79.79	7	28.57%	2.3	7	57.14%	1.0
Phantom Assassin	6	12.24%	45.74	42.55	3	33.33%	1.0	3	100.00%	0.4
Jakiro	18	36.73%	44.68	93.62	14	21.43%	4.7	4	100.00%	0.6
Earth Spirit	3	6.12%	43.62	23.40	3	66.67%	1.0	0	0.00%	0.0
Timbersaw	20	40.82%	42.55	96.81	3	33.33%	1.0	17	29.41%	2.4
Undying	3	6.12%	41.49	21.28	1	100.00%	0.3	2	50.00%	0.3
Queen of Pain	15	30.61%	40.43	85.11	3	66.67%	1.0	12	16.67%	1.7
Morphling	15	30.61%	39.36	88.30	4	25.00%	1.3	11	36.36%	1.6
Lycan	13	26.53%	38.30	80.85	2	0.00%	0.7	11	45.45%	1.6
Slardar	4	8.16%	37.23	25.53	1	100.00%	0.3	3	33.33%	0.4
Dawnbreaker	1	2.04%	36.17	3.19	1	100.00%	0.3	0	0.00%	0.0
Disruptor	1	2.04%	36.17	3.19	1	100.00%	0.3	0	0.00%	0.0
Crystal Maiden	1	2.04%	36.17	5.32	1	100.00%	0.3	0	0.00%	0.0
Drow Ranger	1	2.04%	36.17	18.09	1	100.00%	0.3	0	0.00%	0.0
Enigma	1	2.04%	36.17	13.83	1	100.00%	0.3	0	0.00%	0.0
Chaos Knight	1	2.04%	36.17	13.83	1	100.00%	0.3	0	0.00%	0.0
Bristleback	1	2.04%	36.17	18.09	1	100.00%	0.3	0	0.00%	0.0
Winter Wyvern	1	2.04%	36.17	9.57	1	100.00%	0.3	0	0.00%	0.0
Oracle	1	2.04%	36.17	3.19	1	100.00%	0.3	0	0.00%	0.0
Treant Protector	1	2.04%	36.17	18.09	1	100.00%	0.3	0	0.00%	0.0
Naga Siren	1	2.04%	36.17	9.57	1	100.00%	0.3	0	0.00%	0.0
Void Spirit	8	16.33%	24.47	59.57	3	66.67%	1.0	5	0.00%	0.7
Legion Commander	10	20.41%	23.40	76.60	2	0.00%	0.7	8	50.00%	1.1
Brewmaster	7	14.29%	22.34	48.94	0	0.00%	0.0	7	42.86%	1.0
Faceless Void	4	8.16%	21.28	35.11	2	50.00%	0.7	2	50.00%	0.3
Vengeful Spirit	6	12.24%	20.21	46.81	1	0.00%	0.3	5	60.00%	0.7
Wraith King	12	24.49%	19.15	87.23	3	0.00%	1.0	9	44.44%	1.3
Clockwerk	6	12.24%	18.09	62.77	6	33.33%	2.0	0	0.00%	0.0
Broodmother	1	2.04%	17.02	7.45	0	0.00%	0.0	1	100.00%	0.1
Clinkz	1	2.04%	17.02	7.45	0	0.00%	0.0	1	100.00%	0.1
Windranger	3	6.12%	14.89	45.74	3	33.33%	1.0	0	0.00%	0.0
Leshrac	6	12.24%	13.83	67.02	2	0.00%	0.7	4	50.00%	0.6
Beastmaster	6	12.24%	13.83	67.02	2	0.00%	0.7	4	50.00%	0.6
Lion	2	4.08%	11.70	22.34	0	0.00%	0.0	2	50.00%	0.3
Juggernaut	2	4.08%	10.64	29.79	1	0.00%	0.3	1	100.00%	0.1
Doom	2	4.08%	10.64	29.79	1	0.00%	0.3	1	100.00%	0.1
Dark Willow	4	8.16%	8.51	58.51	2	0.00%	0.7	2	50.00%	0.3
Night Stalker	4	8.16%	8.51	58.51	2	0.00%	0.7	2	50.00%	0.3
Lifestealer	8	16.33%	6.38	91.49	1	0.00%	0.3	7	14.29%	1.0
Phoenix	1	2.04%	5.32	39.36	1	0.00%	0.3	0	0.00%	0.0
Rubick	1	2.04%	5.32	39.36	1	0.00%	0.3	0	0.00%	0.0
Shadow Shaman	1	2.04%	3.19	24.47	0	0.00%	0.0	1	0.00%	0.1
Luna	1	2.04%	2.13	39.36	1	0.00%	0.3	0	0.00%	0.0
Centaur Warrunner	1	2.04%	2.13	39.36	1	0.00%	0.3	0	0.00%	0.0