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): 6 - Median hero bans (mb): 13 - Matches: 114

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

Balance rank	Winrate	Pickrate	Contest Rate
61.5	80.8	43.0	40.5

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Pugna	107	93.86%	100.00	67.33	37	67.57%	6.2	70	54.29%	5.4
Mirana	31	27.19%	99.01	25.74	18	77.78%	3.0	13	69.23%	1.0
Phantom Lancer	20	17.54%	98.02	11.88	3	100.00%	0.5	17	76.47%	1.3
Keeper of the Light	87	76.32%	97.03	66.34	30	50.00%	5.0	57	68.42%	4.4
Death Prophet	85	74.56%	96.04	76.24	28	57.14%	4.7	57	54.39%	4.4
Tiny	65	57.02%	95.05	62.38	41	58.54%	6.8	24	58.33%	1.8
Night Stalker	22	19.30%	94.06	22.77	5	100.00%	0.8	17	58.82%	1.3
Medusa	92	80.70%	93.07	87.13	19	52.63%	3.2	73	50.68%	5.6
Sand King	81	71.05%	92.08	83.17	38	65.79%	6.3	43	30.23%	3.3
Dragon Knight	95	83.33%	91.09	91.09	47	55.32%	7.8	48	41.67%	3.7
Morphling	44	38.60%	90.10	54.46	13	84.62%	2.2	31	38.71%	2.4
Templar Assassin	87	76.32%	89.11	88.12	31	41.94%	5.2	56	58.93%	4.3
Storm Spirit	90	78.95%	88.12	92.08	41	51.22%	6.8	49	46.94%	3.8
Grimstroke	96	84.21%	87.13	94.06	50	46.00%	8.3	46	54.35%	3.5
Bane	33	28.95%	86.14	50.50	23	56.52%	3.8	10	80.00%	0.8
Monkey King	50	43.86%	85.15	60.40	14	64.29%	2.3	36	50.00%	2.8
Treant Protector	30	26.32%	84.16	45.54	19	63.16%	3.2	11	54.55%	0.8
Lycan	22	19.30%	83.17	26.73	3	33.33%	0.5	19	78.95%	1.5
Hoodwink	52	45.61%	82.18	70.30	39	53.85%	6.5	13	46.15%	1.0
Lina	23	20.18%	81.19	32.67	8	75.00%	1.3	15	53.33%	1.2
Timbersaw	69	60.53%	80.20	90.10	23	47.83%	3.8	46	45.65%	3.5
Bloodseeker	21	18.42%	79.21	31.68	6	66.67%	1.0	15	60.00%	1.2
Razor	58	50.88%	78.22	85.15	23	52.17%	3.8	35	42.86%	2.7
Tidehunter	18	15.79%	77.23	28.71	5	100.00%	0.8	13	38.46%	1.0
Ember Spirit	79	69.30%	76.24	96.04	37	45.95%	6.2	42	40.48%	3.2
Slark	6	5.26%	75.25	5.94	3	100.00%	0.5	3	66.67%	0.2
Terrorblade	54	47.37%	74.26	84.16	12	50.00%	2.0	42	45.24%	3.2
Faceless Void	23	20.18%	73.27	43.56	8	62.50%	1.3	15	53.33%	1.2
Shadow Shaman	43	37.72%	72.28	79.21	33	45.45%	5.5	10	60.00%	0.8
Broodmother	11	9.65%	71.29	12.87	1	0.00%	0.2	10	90.00%	0.8
Puck	50	43.86%	70.30	82.18	12	50.00%	2.0	38	44.74%	2.9
Earth Spirit	24	21.05%	69.31	55.45	19	52.63%	3.2	5	60.00%	0.4
Wraith King	18	15.79%	68.32	34.65	7	57.14%	1.2	11	63.64%	0.8
Chaos Knight	59	51.75%	67.33	93.07	24	50.00%	4.0	35	34.29%	2.7
Io	21	18.42%	66.34	40.59	5	40.00%	0.8	16	68.75%	1.2
Huskar	19	16.67%	65.35	30.69	1	0.00%	0.2	18	66.67%	1.4
Kunkka	46	40.35%	64.36	86.14	21	47.62%	3.5	25	40.00%	1.9
Batrider	44	38.60%	63.37	81.19	11	45.45%	1.8	33	45.45%	2.5
Beastmaster	31	27.19%	62.38	63.37	8	37.50%	1.3	23	56.52%	1.8
Invoker	23	20.18%	61.39	49.50	3	66.67%	0.5	20	50.00%	1.5
Ogre Magi	16	14.04%	60.40	44.55	15	53.33%	2.5	1	100.00%	0.1
Pangolier	79	69.30%	59.41	99.01	34	41.18%	5.7	45	31.11%	3.5
Mars	79	69.30%	58.42	100.00	35	34.29%	5.8	44	40.91%	3.4
Abaddon	30	26.32%	57.43	74.26	21	38.10%	3.5	9	77.78%	0.7
Enigma	14	12.28%	56.44	37.62	9	66.67%	1.5	5	20.00%	0.4
Naga Siren	7	6.14%	55.45	10.89	4	75.00%	0.7	3	66.67%	0.2
Weaver	18	15.79%	54.46	41.58	4	75.00%	0.7	14	42.86%	1.1
Nyx Assassin	28	24.56%	53.47	72.28	19	42.11%	3.2	9	55.56%	0.7
Lifestealer	32	28.07%	52.48	71.29	6	33.33%	1.0	26	50.00%	2.0
Dark Seer	3	2.63%	51.49	0.99	2	100.00%	0.3	1	100.00%	0.1
Shadow Demon	22	19.30%	50.50	56.44	9	44.44%	1.5	13	53.85%	1.0
Anti-Mage	47	41.23%	49.50	95.05	7	0.00%	1.2	40	52.50%	3.1
Necrophos	31	27.19%	48.51	75.25	8	37.50%	1.3	23	47.83%	1.8
Brewmaster	8	7.02%	47.52	14.85	2	100.00%	0.3	6	50.00%	0.5
Queen of Pain	40	35.09%	46.53	89.11	8	25.00%	1.3	32	46.88%	2.5
Drow Ranger	9	7.89%	45.54	23.76	4	75.00%	0.7	5	40.00%	0.4
Ancient Apparition	5	4.39%	44.55	7.92	3	100.00%	0.5	2	0.00%	0.2
Dark Willow	3	2.63%	43.56	4.95	1	100.00%	0.2	2	100.00%	0.2
Underlord	13	11.40%	42.57	47.52	8	50.00%	1.3	5	40.00%	0.4
Leshrac	20	17.54%	41.58	61.39	6	33.33%	1.0	14	50.00%	1.1
Magnus	2	1.75%	40.59	3.96	2	100.00%	0.3	0	0.00%	0.0
Witch Doctor	2	1.75%	40.59	1.98	2	100.00%	0.3	0	0.00%	0.0
Rubick	19	16.67%	38.61	68.32	13	38.46%	2.2	6	50.00%	0.5
Undying	9	7.89%	37.62	29.70	6	66.67%	1.0	3	0.00%	0.2
Snapfire	20	17.54%	36.63	73.27	13	38.46%	2.2	7	42.86%	0.5
Ursa	18	15.79%	35.64	58.42	3	0.00%	0.5	15	60.00%	1.2
Visage	13	11.40%	34.65	51.49	7	42.86%	1.2	6	50.00%	0.5
Clockwerk	9	7.89%	33.66	36.63	7	42.86%	1.2	2	100.00%	0.2
Outworld Destroyer	4	3.51%	32.67	6.93	1	100.00%	0.2	3	66.67%	0.2
Nature's Prophet	11	9.65%	31.68	52.48	8	37.50%	1.3	3	66.67%	0.2
Meepo	8	7.02%	30.69	27.72	2	50.00%	0.3	6	50.00%	0.5
Void Spirit	15	13.16%	29.70	69.31	8	25.00%	1.3	7	57.14%	0.5
Lich	3	2.63%	28.71	8.91	3	66.67%	0.5	0	0.00%	0.0
Doom	16	14.04%	27.72	77.23	8	25.00%	1.3	8	50.00%	0.6
Slardar	10	8.77%	26.73	42.57	2	50.00%	0.3	8	37.50%	0.6
Juggernaut	10	8.77%	25.74	53.47	6	16.67%	1.0	4	100.00%	0.3
Viper	18	15.79%	24.75	78.22	1	0.00%	0.2	17	35.29%	1.3
Windranger	8	7.02%	23.76	46.53	5	40.00%	0.8	3	33.33%	0.2
Vengeful Spirit	4	3.51%	22.77	21.78	4	50.00%	0.7	0	0.00%	0.0
Luna	4	3.51%	22.77	21.78	4	50.00%	0.7	0	0.00%	0.0
Tusk	10	8.77%	20.79	64.36	9	33.33%	1.5	1	0.00%	0.1
Disruptor	3	2.63%	19.80	9.90	2	50.00%	0.3	1	100.00%	0.1
Jakiro	1	0.88%	18.81	2.97	1	100.00%	0.2	0	0.00%	0.0
Spectre	6	5.26%	17.82	33.66	4	25.00%	0.7	2	100.00%	0.2
Gyrocopter	6	5.26%	16.83	48.51	6	33.33%	1.0	0	0.00%	0.0
Clinkz	3	2.63%	15.84	13.86	1	0.00%	0.2	2	100.00%	0.2
Legion Commander	11	9.65%	14.85	65.35	1	0.00%	0.2	10	30.00%	0.8
Troll Warlord	9	7.89%	13.86	80.20	6	16.67%	1.0	3	33.33%	0.2
Lion	4	3.51%	12.87	35.64	3	33.33%	0.5	1	0.00%	0.1
Phantom Assassin	14	12.28%	11.88	97.03	6	16.67%	1.0	8	12.50%	0.6
Omniknight	5	4.39%	10.89	57.43	5	20.00%	0.8	0	0.00%	0.0
Enchantress	14	12.28%	9.90	98.02	5	0.00%	0.8	9	22.22%	0.7
Sniper	2	1.75%	8.91	39.60	2	0.00%	0.3	0	0.00%	0.0
Venomancer	2	1.75%	7.92	24.75	0	0.00%	0.0	2	0.00%	0.2
Phoenix	3	2.63%	6.93	59.41	3	0.00%	0.5	0	0.00%	0.0
Winter Wyvern	1	0.88%	5.94	19.80	1	0.00%	0.2	0	0.00%	0.0
Zeus	1	0.88%	5.94	19.80	1	0.00%	0.2	0	0.00%	0.0
Oracle	1	0.88%	5.94	19.80	1	0.00%	0.2	0	0.00%	0.0
Shadow Fiend	1	0.88%	5.94	19.80	1	0.00%	0.2	0	0.00%	0.0
Skywrath Mage	1	0.88%	5.94	19.80	1	0.00%	0.2	0	0.00%	0.0
Techies	2	1.75%	0.99	39.60	2	0.00%	0.3	0	0.00%	0.0