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): 5 - Median hero bans (mb): 7 - Matches: 73

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

Balance rank	Winrate	Pickrate	Contest Rate
55.5	68.6	43.8	39.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Timbersaw	30	41.10%	100.00	36.45	10	70.00%	2.0	20	75.00%	2.9
Io	64	87.67%	99.07	80.37	19	57.89%	3.8	45	55.56%	6.4
Bane	35	47.95%	98.13	61.68	21	66.67%	4.2	14	57.14%	2.0
Mirana	20	27.40%	97.20	33.64	15	73.33%	3.0	5	60.00%	0.7
Mars	65	89.04%	96.26	88.79	42	59.52%	8.4	23	34.78%	3.3
Phoenix	8	10.96%	95.33	9.35	7	85.71%	1.4	1	100.00%	0.1
Medusa	56	76.71%	94.39	82.24	10	70.00%	2.0	46	47.83%	6.6
Chaos Knight	42	57.53%	93.46	72.90	15	60.00%	3.0	27	55.56%	3.9
Razor	24	32.88%	92.52	43.93	8	62.50%	1.6	16	68.75%	2.3
Enchantress	27	36.99%	91.59	54.21	11	63.64%	2.2	16	62.50%	2.3
Dragon Knight	36	49.32%	90.65	69.16	15	73.33%	3.0	21	38.10%	3.0
Beastmaster	22	30.14%	89.72	37.38	2	50.00%	0.4	20	70.00%	2.9
Necrophos	31	42.47%	88.79	67.29	11	63.64%	2.2	20	55.00%	2.9
Tiny	64	87.67%	87.85	92.52	31	58.06%	6.2	33	33.33%	4.7
Puck	23	31.51%	86.92	49.53	6	83.33%	1.2	17	47.06%	2.4
Death Prophet	68	93.15%	85.98	97.20	22	40.91%	4.4	46	50.00%	6.6
Anti-Mage	23	31.51%	85.05	52.34	5	80.00%	1.0	18	50.00%	2.6
Keeper of the Light	54	73.97%	84.11	91.59	20	45.00%	4.0	34	50.00%	4.9
Batrider	43	58.90%	83.18	81.31	4	75.00%	0.8	39	46.15%	5.6
Shadow Demon	22	30.14%	82.24	55.14	8	62.50%	1.6	14	57.14%	2.0
Wraith King	21	28.77%	81.31	53.27	9	55.56%	1.8	12	66.67%	1.7
Ember Spirit	47	64.38%	80.37	89.72	18	44.44%	3.6	29	51.72%	4.1
Skywrath Mage	8	10.96%	79.44	16.82	8	75.00%	1.6	0	0.00%	0.0
Juggernaut	19	26.03%	78.50	47.66	9	66.67%	1.8	10	50.00%	1.4
Chen	7	9.59%	77.57	5.61	1	100.00%	0.2	6	83.33%	0.9
Monkey King	37	50.68%	76.64	85.05	21	42.86%	4.2	16	62.50%	2.3
Hoodwink	16	21.92%	75.70	45.79	11	54.55%	2.2	5	80.00%	0.7
Tusk	11	15.07%	74.77	30.84	9	66.67%	1.8	2	50.00%	0.3
Viper	21	28.77%	73.83	60.75	4	25.00%	0.8	17	70.59%	2.4
Sand King	50	68.49%	72.90	96.26	26	46.15%	5.2	24	33.33%	3.4
Storm Spirit	46	63.01%	71.96	93.46	17	35.29%	3.4	29	51.72%	4.1
Templar Assassin	28	38.36%	71.03	73.83	6	66.67%	1.2	22	40.91%	3.1
Terrorblade	29	39.73%	70.09	79.44	11	45.45%	2.2	18	50.00%	2.6
Ancient Apparition	12	16.44%	69.16	35.51	6	50.00%	1.2	6	83.33%	0.9
Phantom Assassin	11	15.07%	68.22	28.04	3	66.67%	0.6	8	62.50%	1.1
Invoker	45	61.64%	67.29	94.39	4	50.00%	0.8	41	39.02%	5.9
Leshrac	14	19.18%	66.36	44.86	7	71.43%	1.4	7	28.57%	1.0
Jakiro	9	12.33%	65.42	29.91	7	71.43%	1.4	2	0.00%	0.3
Grimstroke	25	34.25%	64.49	83.18	18	44.44%	3.6	7	42.86%	1.0
Pugna	33	45.21%	63.55	90.65	13	38.46%	2.6	20	45.00%	2.9
Kunkka	25	34.25%	62.62	84.11	12	41.67%	2.4	13	46.15%	1.9
Pangolier	44	60.27%	61.68	99.07	14	14.29%	2.8	30	56.67%	4.3
Tidehunter	13	17.81%	60.75	50.47	6	33.33%	1.2	7	85.71%	1.0
Bristleback	4	5.48%	59.81	6.54	2	100.00%	0.4	2	50.00%	0.3
Venomancer	6	8.22%	58.88	11.21	1	100.00%	0.2	5	60.00%	0.7
Faceless Void	33	45.21%	57.94	95.33	9	55.56%	1.8	24	20.83%	3.4
Disruptor	2	2.74%	57.01	3.74	2	100.00%	0.4	0	0.00%	0.0
Ogre Magi	2	2.74%	57.01	3.74	2	100.00%	0.4	0	0.00%	0.0
Axe	2	2.74%	57.01	3.74	2	100.00%	0.4	0	0.00%	0.0
Queen of Pain	9	12.33%	54.21	40.19	6	66.67%	1.2	3	0.00%	0.4
Morphling	16	21.92%	53.27	70.09	4	50.00%	0.8	12	41.67%	1.7
Centaur Warrunner	7	9.59%	52.34	28.97	5	60.00%	1.0	2	50.00%	0.3
Shadow Shaman	8	10.96%	51.40	39.25	7	57.14%	1.4	1	0.00%	0.1
Omniknight	10	13.70%	50.47	48.60	6	66.67%	1.2	4	0.00%	0.6
Night Stalker	4	5.48%	49.53	7.48	1	100.00%	0.2	3	66.67%	0.4
Lifestealer	14	19.18%	48.60	65.42	1	0.00%	0.2	13	53.85%	1.9
Luna	17	23.29%	47.66	76.64	8	37.50%	1.6	9	44.44%	1.3
Lone Druid	12	16.44%	46.73	59.81	3	33.33%	0.6	9	55.56%	1.3
Void Spirit	12	16.44%	46.73	59.81	3	33.33%	0.6	9	55.56%	1.3
Doom	12	16.44%	44.86	68.22	6	33.33%	1.2	6	66.67%	0.9
Huskar	17	23.29%	43.93	75.70	3	33.33%	0.6	14	42.86%	2.0
Clockwerk	14	19.18%	42.99	77.57	10	30.00%	2.0	4	75.00%	0.6
Bloodseeker	10	13.70%	42.06	51.40	3	66.67%	0.6	7	28.57%	1.0
Snapfire	15	20.55%	41.12	85.98	13	30.77%	2.6	2	100.00%	0.3
Windranger	7	9.59%	40.19	38.32	5	60.00%	1.0	2	0.00%	0.3
Vengeful Spirit	9	12.33%	39.25	63.55	7	42.86%	1.4	2	50.00%	0.3
Undying	10	13.70%	38.32	71.03	8	37.50%	1.6	2	50.00%	0.3
Weaver	14	19.18%	37.38	86.92	10	30.00%	2.0	4	50.00%	0.6
Oracle	3	4.11%	36.45	8.41	1	100.00%	0.2	2	50.00%	0.3
Naga Siren	4	5.48%	35.51	13.08	1	100.00%	0.2	3	33.33%	0.4
Lina	20	27.40%	34.58	98.13	7	14.29%	1.4	13	38.46%	1.9
Rubick	10	13.70%	33.64	78.50	9	33.33%	1.8	1	0.00%	0.1
Dawnbreaker	1	1.37%	32.71	0.93	1	100.00%	0.2	0	0.00%	0.0
Visage	7	9.59%	31.78	62.62	4	25.00%	0.8	3	66.67%	0.4
Winter Wyvern	6	8.22%	30.84	57.94	5	40.00%	1.0	1	0.00%	0.1
Abaddon	4	5.48%	29.91	31.78	3	33.33%	0.6	1	100.00%	0.1
Phantom Lancer	8	10.96%	28.97	66.36	1	0.00%	0.2	7	42.86%	1.0
Drow Ranger	5	6.85%	28.04	42.99	3	33.33%	0.6	2	50.00%	0.3
Nature's Prophet	7	9.59%	27.10	71.96	4	0.00%	0.8	3	100.00%	0.4
Magnus	2	2.74%	26.17	15.89	2	50.00%	0.4	0	0.00%	0.0
Crystal Maiden	2	2.74%	26.17	15.89	2	50.00%	0.4	0	0.00%	0.0
Nyx Assassin	2	2.74%	26.17	15.89	2	50.00%	0.4	0	0.00%	0.0
Slardar	1	1.37%	23.36	4.67	0	0.00%	0.0	1	100.00%	0.1
Ursa	9	12.33%	22.43	87.85	5	0.00%	1.0	4	75.00%	0.6
Gyrocopter	6	8.22%	21.50	57.01	1	0.00%	0.2	5	40.00%	0.7
Treant Protector	3	4.11%	20.56	34.58	3	33.33%	0.6	0	0.00%	0.0
Broodmother	2	2.74%	19.63	10.28	0	0.00%	0.0	2	50.00%	0.3
Enigma	2	2.74%	18.69	19.63	1	0.00%	0.2	1	100.00%	0.1
Zeus	2	2.74%	18.69	19.63	1	0.00%	0.2	1	100.00%	0.1
Outworld Destroyer	2	2.74%	18.69	19.63	1	0.00%	0.2	1	100.00%	0.1
Underlord	3	4.11%	15.89	32.71	1	0.00%	0.2	2	50.00%	0.3
Brewmaster	4	5.48%	14.95	46.73	1	0.00%	0.2	3	33.33%	0.4
Legion Commander	4	5.48%	14.02	64.49	2	0.00%	0.4	2	50.00%	0.3
Clinkz	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Spectre	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Shadow Fiend	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Alchemist	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Lion	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Pudge	1	1.37%	13.08	27.10	1	0.00%	0.2	0	0.00%	0.0
Meepo	2	2.74%	7.48	42.06	1	0.00%	0.2	1	0.00%	0.1
Techies	1	1.37%	6.54	27.10	1	0.00%	0.2	0	0.00%	0.0
Tinker	1	1.37%	6.54	27.10	1	0.00%	0.2	0	0.00%	0.0
Dark Seer	3	4.11%	4.67	74.77	3	0.00%	0.6	0	0.00%	0.0
Earth Spirit	6	8.22%	3.74	100.00	5	0.00%	1.0	1	0.00%	0.1
Lycan	2	2.74%	2.80	42.06	1	0.00%	0.2	1	0.00%	0.1
Lich	2	2.74%	1.87	56.07	2	0.00%	0.4	0	0.00%	0.0
Dark Willow	1	1.37%	0.93	13.08	0	0.00%	0.0	1	0.00%	0.1