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): 8 - Median hero bans (mb): 10 - Matches: 139

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

Balance rank	Winrate	Pickrate	Contest Rate
68.3	91.5	47.9	39.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Queen of Pain	109	78.42%	100.00	67.86	54	59.26%	6.8	55	63.64%	5.5
Dark Seer	34	24.46%	99.11	29.46	11	72.73%	1.4	23	69.57%	2.3
Void Spirit	28	20.14%	98.21	28.57	14	71.43%	1.8	14	71.43%	1.4
Beastmaster	106	76.26%	97.32	84.82	27	55.56%	3.4	79	53.16%	7.9
Bane	86	61.87%	96.43	77.68	56	57.14%	7.0	30	50.00%	3.0
Tidehunter	58	41.73%	95.54	57.14	17	70.59%	2.1	41	51.22%	4.1
Timbersaw	59	42.45%	94.64	60.71	15	53.33%	1.9	44	61.36%	4.4
Ember Spirit	61	43.88%	93.75	66.07	22	54.55%	2.8	39	58.97%	3.9
Templar Assassin	51	36.69%	92.86	56.25	15	80.00%	1.9	36	41.67%	3.6
Outworld Destroyer	71	51.08%	91.96	74.11	19	63.16%	2.4	52	48.08%	5.2
Phantom Assassin	75	53.96%	91.07	81.25	28	57.14%	3.5	47	48.94%	4.7
Kunkka	88	63.31%	90.18	86.61	37	51.35%	4.6	51	50.98%	5.1
Weaver	114	82.01%	89.29	96.43	48	37.50%	6.0	66	62.12%	6.6
Io	132	94.96%	88.39	98.21	34	47.06%	4.3	98	45.92%	9.8
Spirit Breaker	108	77.70%	87.50	95.54	52	46.15%	6.5	56	50.00%	5.6
Earth Spirit	9	6.47%	86.61	9.82	8	87.50%	1.0	1	0.00%	0.1
Mirana	11	7.91%	85.71	15.18	8	87.50%	1.0	3	33.33%	0.3
Grimstroke	49	35.25%	84.82	65.18	32	56.25%	4.0	17	52.94%	1.7
Invoker	92	66.19%	83.93	90.18	28	53.57%	3.5	64	45.31%	6.4
Razor	91	65.47%	83.04	91.96	38	52.63%	4.8	53	43.40%	5.3
Morphling	57	41.01%	82.14	68.75	10	40.00%	1.3	47	59.57%	4.7
Wraith King	65	46.76%	81.25	82.14	35	51.43%	4.4	30	50.00%	3.0
Nyx Assassin	53	38.13%	80.36	71.43	36	55.56%	4.5	17	41.18%	1.7
Lycan	27	19.42%	79.46	34.82	8	75.00%	1.0	19	52.63%	1.9
Batrider	36	25.90%	78.57	48.21	7	71.43%	0.9	29	51.72%	2.9
Puck	85	61.15%	77.68	93.75	35	42.86%	4.4	50	52.00%	5.0
Storm Spirit	51	36.69%	76.79	75.89	26	50.00%	3.3	25	52.00%	2.5
Snapfire	69	49.64%	75.89	91.07	46	43.48%	5.8	23	56.52%	2.3
Mars	99	71.22%	75.00	99.11	40	35.00%	5.0	59	50.85%	5.9
Disruptor	43	30.94%	74.11	76.79	34	50.00%	4.3	9	44.44%	0.9
Luna	63	45.32%	73.21	87.50	27	33.33%	3.4	36	63.89%	3.6
Lina	65	46.76%	72.32	88.39	17	29.41%	2.1	48	56.25%	4.8
Broodmother	34	24.46%	71.43	54.46	5	100.00%	0.6	29	37.93%	2.9
Clockwerk	23	16.55%	70.54	41.96	16	62.50%	2.0	7	28.57%	0.7
Medusa	55	39.57%	69.64	85.71	15	40.00%	1.9	40	50.00%	4.0
Legion Commander	28	20.14%	68.75	51.79	7	57.14%	0.9	21	52.38%	2.1
Enigma	11	7.91%	67.86	19.64	3	100.00%	0.4	8	50.00%	0.8
Viper	21	15.11%	66.96	36.61	7	57.14%	0.9	14	57.14%	1.4
Juggernaut	11	7.91%	66.07	23.21	7	71.43%	0.9	4	50.00%	0.4
Ursa	31	22.30%	65.18	62.50	9	44.44%	1.1	22	54.55%	2.2
Jakiro	24	17.27%	64.29	58.04	19	52.63%	2.4	5	40.00%	0.5
Bloodseeker	30	21.58%	63.39	61.61	10	70.00%	1.3	20	30.00%	2.0
Death Prophet	22	15.83%	62.50	49.11	12	58.33%	1.5	10	40.00%	1.0
Treant Protector	35	25.18%	61.61	78.57	24	45.83%	3.0	11	45.45%	1.1
Vengeful Spirit	3	2.16%	60.71	5.36	3	100.00%	0.4	0	0.00%	0.0
Monkey King	60	43.17%	59.82	97.32	17	41.18%	2.1	43	39.53%	4.3
Faceless Void	36	25.90%	58.93	73.21	5	60.00%	0.6	31	41.94%	3.1
Naga Siren	16	11.51%	58.04	33.93	7	71.43%	0.9	9	33.33%	0.9
Terrorblade	48	34.53%	57.14	92.86	11	36.36%	1.4	37	43.24%	3.7
Night Stalker	52	37.41%	56.25	94.64	11	27.27%	1.4	41	46.34%	4.1
Troll Warlord	25	17.99%	55.36	59.82	6	33.33%	0.8	19	57.89%	1.9
Shadow Demon	29	20.86%	54.46	75.00	16	43.75%	2.0	13	46.15%	1.3
Drow Ranger	25	17.99%	53.57	63.39	7	57.14%	0.9	18	38.89%	1.8
Abaddon	19	13.67%	52.68	47.32	7	42.86%	0.9	12	58.33%	1.2
Enchantress	19	13.67%	51.79	44.64	5	60.00%	0.6	14	42.86%	1.4
Doom	39	28.06%	50.89	89.29	15	33.33%	1.9	24	45.83%	2.4
Rubick	27	19.42%	50.00	79.46	18	44.44%	2.3	9	33.33%	0.9
Hoodwink	22	15.83%	49.11	66.96	14	42.86%	1.8	8	50.00%	0.8
Gyrocopter	14	10.07%	48.21	41.07	12	50.00%	1.5	2	50.00%	0.2
Leshrac	17	12.23%	47.32	40.18	5	60.00%	0.6	12	41.67%	1.2
Tinker	21	15.11%	46.43	58.93	5	80.00%	0.6	16	25.00%	1.6
Bristleback	5	3.60%	45.54	8.93	3	66.67%	0.4	2	100.00%	0.2
Dazzle	7	5.04%	44.64	20.54	4	75.00%	0.5	3	33.33%	0.3
Nature's Prophet	13	9.35%	43.75	39.29	8	50.00%	1.0	5	40.00%	0.5
Phantom Lancer	25	17.99%	42.86	80.36	6	33.33%	0.8	19	42.11%	1.9
Windranger	9	6.47%	41.96	30.36	6	50.00%	0.8	3	66.67%	0.3
Slardar	26	18.71%	41.07	83.04	6	33.33%	0.8	20	40.00%	2.0
Dragon Knight	7	5.04%	40.18	21.43	3	66.67%	0.4	4	50.00%	0.4
Oracle	8	5.76%	39.29	25.89	5	60.00%	0.6	3	33.33%	0.3
Sand King	14	10.07%	38.39	52.68	7	28.57%	0.9	7	71.43%	0.7
Dark Willow	20	14.39%	37.50	83.93	16	37.50%	2.0	4	25.00%	0.4
Lifestealer	14	10.07%	36.61	43.75	4	50.00%	0.5	10	40.00%	1.0
Pangolier	18	12.95%	35.71	72.32	11	18.18%	1.4	7	100.00%	0.7
Sven	6	4.32%	34.82	18.75	2	50.00%	0.3	4	75.00%	0.4
Lion	14	10.07%	33.93	64.29	11	36.36%	1.4	3	66.67%	0.3
Skywrath Mage	5	3.60%	33.04	17.86	3	66.67%	0.4	2	50.00%	0.2
Magnus	2	1.44%	32.14	2.68	1	100.00%	0.1	1	100.00%	0.1
Axe	2	1.44%	32.14	2.68	1	100.00%	0.1	1	100.00%	0.1
Earthshaker	2	1.44%	32.14	2.68	1	100.00%	0.1	1	100.00%	0.1
Centaur Warrunner	9	6.47%	29.46	42.86	8	37.50%	1.0	1	100.00%	0.1
Venomancer	10	7.19%	28.57	38.39	4	50.00%	0.5	6	33.33%	0.6
Elder Titan	3	2.16%	27.68	12.50	3	66.67%	0.4	0	0.00%	0.0
Warlock	3	2.16%	27.68	12.50	3	66.67%	0.4	0	0.00%	0.0
Pudge	3	2.16%	27.68	12.50	3	66.67%	0.4	0	0.00%	0.0
Chen	9	6.47%	25.00	37.50	5	40.00%	0.6	4	50.00%	0.4
Shadow Fiend	13	9.35%	24.11	69.64	10	40.00%	1.3	3	0.00%	0.3
Phoenix	2	1.44%	23.21	4.46	0	0.00%	0.0	2	100.00%	0.2
Ogre Magi	9	6.47%	22.32	53.57	8	37.50%	1.0	1	0.00%	0.1
Visage	9	6.47%	21.43	50.00	5	40.00%	0.6	4	25.00%	0.4
Chaos Knight	8	5.76%	20.54	46.43	6	33.33%	0.8	2	50.00%	0.2
Tusk	5	3.60%	19.64	27.68	4	50.00%	0.5	1	0.00%	0.1
Undying	5	3.60%	19.64	27.68	4	50.00%	0.5	1	0.00%	0.1
Witch Doctor	1	0.72%	17.86	3.57	1	100.00%	0.1	0	0.00%	0.0
Huskar	7	5.04%	16.96	33.04	3	33.33%	0.4	4	50.00%	0.4
Silencer	8	5.76%	16.07	45.54	4	25.00%	0.5	4	50.00%	0.4
Ancient Apparition	5	3.60%	15.18	24.11	2	50.00%	0.3	3	33.33%	0.3
Anti-Mage	9	6.47%	14.29	55.36	4	50.00%	0.5	5	0.00%	0.5
Pugna	2	1.44%	13.39	8.04	1	100.00%	0.1	1	0.00%	0.1
Winter Wyvern	5	3.60%	12.50	31.25	3	33.33%	0.4	2	50.00%	0.2
Sniper	3	2.16%	11.61	16.96	1	0.00%	0.1	2	100.00%	0.2
Arc Warden	3	2.16%	11.61	16.96	1	0.00%	0.1	2	100.00%	0.2
Brewmaster	2	1.44%	9.82	14.29	2	50.00%	0.3	0	0.00%	0.0
Clinkz	2	1.44%	9.82	14.29	2	50.00%	0.3	0	0.00%	0.0
Spectre	1	0.72%	8.04	7.14	0	0.00%	0.0	1	100.00%	0.1
Lone Druid	1	0.72%	8.04	7.14	0	0.00%	0.0	1	100.00%	0.1
Shadow Shaman	3	2.16%	6.25	25.00	3	33.33%	0.4	0	0.00%	0.0
Zeus	4	2.88%	5.36	32.14	3	33.33%	0.4	1	0.00%	0.1
Underlord	13	9.35%	4.46	100.00	9	11.11%	1.1	4	0.00%	0.4
Necrophos	6	4.32%	3.57	70.54	3	0.00%	0.4	3	33.33%	0.3
Keeper of the Light	2	1.44%	2.68	35.71	2	0.00%	0.3	0	0.00%	0.0
Slark	3	2.16%	1.79	50.89	2	0.00%	0.3	1	0.00%	0.1
Crystal Maiden	1	0.72%	0.89	23.21	1	0.00%	0.1	0	0.00%	0.0