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): 5 - Matches: 61

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

Balance rank	Winrate	Pickrate	Contest Rate
62.3	74.7	52.1	45.3

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Slark	19	31.15%	100.00	21.57	6	83.33%	1.0	13	84.62%	2.6
Grimstroke	50	81.97%	99.02	72.55	19	63.16%	3.2	31	54.84%	6.2
Dark Willow	25	40.98%	98.04	47.06	16	81.25%	2.7	9	22.22%	1.8
Dragon Knight	5	8.20%	97.06	7.84	4	100.00%	0.7	1	100.00%	0.2
Outworld Destroyer	34	55.74%	96.08	64.71	9	66.67%	1.5	25	56.00%	5.0
Bane	9	14.75%	95.10	12.75	8	87.50%	1.3	1	0.00%	0.2
Juggernaut	32	52.46%	94.12	65.69	18	61.11%	3.0	14	57.14%	2.8
Night Stalker	5	8.20%	93.14	5.88	3	100.00%	0.5	2	100.00%	0.4
Enigma	31	50.82%	92.16	63.73	11	63.64%	1.8	20	55.00%	4.0
Ancient Apparition	34	55.74%	91.18	66.67	17	47.06%	2.8	17	76.47%	3.4
Pangolier	14	22.95%	90.20	35.29	6	66.67%	1.0	8	75.00%	1.6
Centaur Warrunner	48	78.69%	89.22	97.06	22	50.00%	3.7	26	46.15%	5.2
Phantom Lancer	4	6.56%	88.24	0.98	3	100.00%	0.5	1	100.00%	0.2
Wraith King	36	59.02%	87.25	81.37	22	50.00%	3.7	14	57.14%	2.8
Chen	45	73.77%	86.27	92.16	8	50.00%	1.3	37	48.65%	7.4
Death Prophet	34	55.74%	85.29	77.45	12	66.67%	2.0	22	36.36%	4.4
Spirit Breaker	38	62.30%	84.31	83.33	15	40.00%	2.5	23	60.87%	4.6
Crystal Maiden	27	44.26%	83.33	70.59	15	46.67%	2.5	12	66.67%	2.4
Doom	17	27.87%	82.35	50.98	6	83.33%	1.0	11	36.36%	2.2
Sven	30	49.18%	81.37	78.43	16	43.75%	2.7	14	64.29%	2.8
Mars	14	22.95%	80.39	46.08	9	77.78%	1.5	5	0.00%	1.0
Omniknight	38	62.30%	79.41	94.12	14	64.29%	2.3	24	25.00%	4.8
Queen of Pain	13	21.31%	78.43	43.14	8	62.50%	1.3	5	60.00%	1.0
Templar Assassin	13	21.31%	77.45	44.12	8	75.00%	1.3	5	20.00%	1.0
Ember Spirit	52	85.25%	76.47	100.00	14	35.71%	2.3	38	44.74%	7.6
Dazzle	12	19.67%	75.49	38.24	7	85.71%	1.2	5	0.00%	1.0
Tiny	13	21.31%	74.51	51.96	11	54.55%	1.8	2	100.00%	0.4
Phoenix	12	19.67%	73.53	45.10	10	60.00%	1.7	2	50.00%	0.4
Beastmaster	25	40.98%	72.55	76.47	10	50.00%	1.7	15	46.67%	3.0
Broodmother	11	18.03%	71.57	29.41	1	100.00%	0.2	10	60.00%	2.0
Sniper	11	18.03%	70.59	36.27	5	60.00%	0.8	6	66.67%	1.2
Shadow Demon	33	54.10%	69.61	96.08	12	16.67%	2.0	21	71.43%	4.2
Rubick	24	39.34%	68.63	82.35	14	35.71%	2.3	10	70.00%	2.0
Winter Wyvern	12	19.67%	67.65	52.94	8	50.00%	1.3	4	75.00%	0.8
Treant Protector	21	34.43%	66.67	75.49	9	55.56%	1.5	12	33.33%	2.4
Nyx Assassin	7	11.48%	65.69	27.45	5	80.00%	0.8	2	0.00%	0.4
Lifestealer	27	44.26%	64.71	90.20	11	36.36%	1.8	16	50.00%	3.2
Morphling	29	47.54%	63.73	98.04	10	60.00%	1.7	19	21.05%	3.8
Kunkka	18	29.51%	62.75	74.51	9	33.33%	1.5	9	66.67%	1.8
Lina	20	32.79%	61.76	79.41	8	12.50%	1.3	12	83.33%	2.4
Ursa	4	6.56%	60.78	10.78	4	75.00%	0.7	0	0.00%	0.0
Axe	22	36.07%	59.80	86.27	12	41.67%	2.0	10	40.00%	2.0
Dark Seer	24	39.34%	58.82	89.22	6	33.33%	1.0	18	44.44%	3.6
Witch Doctor	2	3.28%	57.84	6.86	2	100.00%	0.3	0	0.00%	0.0
Troll Warlord	15	24.59%	56.86	69.61	10	50.00%	1.7	5	20.00%	1.0
Io	22	36.07%	55.88	88.24	6	33.33%	1.0	16	43.75%	3.2
Warlock	7	11.48%	54.90	33.33	3	66.67%	0.5	4	50.00%	0.8
Alchemist	7	11.48%	54.90	33.33	3	66.67%	0.5	4	50.00%	0.8
Storm Spirit	20	32.79%	52.94	84.31	8	37.50%	1.3	12	41.67%	2.4
Weaver	4	6.56%	51.96	11.76	3	66.67%	0.5	1	100.00%	0.2
Shadow Shaman	7	11.48%	50.98	40.20	6	50.00%	1.0	1	100.00%	0.2
Tidehunter	5	8.20%	50.00	25.49	3	66.67%	0.5	2	50.00%	0.4
Puck	9	14.75%	49.02	55.88	6	33.33%	1.0	3	100.00%	0.6
Naga Siren	14	22.95%	48.04	73.53	4	25.00%	0.7	10	50.00%	2.0
Huskar	8	13.11%	47.06	42.16	2	50.00%	0.3	6	50.00%	1.2
Gyrocopter	6	9.84%	46.08	41.18	6	50.00%	1.0	0	0.00%	0.0
Magnus	5	8.20%	45.10	34.31	4	50.00%	0.7	1	100.00%	0.2
Oracle	12	19.67%	44.12	68.63	6	33.33%	1.0	6	50.00%	1.2
Leshrac	13	21.31%	43.14	71.57	3	0.00%	0.5	10	60.00%	2.0
Anti-Mage	9	14.75%	42.16	58.82	3	33.33%	0.5	6	50.00%	1.2
Batrider	22	36.07%	41.18	99.02	7	14.29%	1.2	15	40.00%	3.0
Silencer	8	13.11%	40.20	56.86	4	25.00%	0.7	4	75.00%	0.8
Monkey King	2	3.28%	39.22	2.94	0	0.00%	0.0	2	100.00%	0.4
Chaos Knight	2	3.28%	39.22	2.94	0	0.00%	0.0	2	100.00%	0.4
Faceless Void	7	11.48%	37.25	61.76	6	33.33%	1.0	1	100.00%	0.2
Nature's Prophet	3	4.92%	36.27	14.71	2	50.00%	0.3	1	100.00%	0.2
Undying	3	4.92%	36.27	14.71	2	50.00%	0.3	1	100.00%	0.2
Clinkz	1	1.64%	34.31	4.90	1	100.00%	0.2	0	0.00%	0.0
Necrophos	1	1.64%	34.31	4.90	1	100.00%	0.2	0	0.00%	0.0
Legion Commander	4	6.56%	32.35	28.43	2	50.00%	0.3	2	50.00%	0.4
Disruptor	5	8.20%	31.37	50.00	5	40.00%	0.8	0	0.00%	0.0
Razor	7	11.48%	30.39	60.78	4	50.00%	0.7	3	0.00%	0.6
Sand King	10	16.39%	29.41	85.29	8	25.00%	1.3	2	50.00%	0.4
Pugna	5	8.20%	28.43	37.25	2	50.00%	0.3	3	33.33%	0.6
Timbersaw	10	16.39%	27.45	80.39	4	25.00%	0.7	6	33.33%	1.2
Tinker	5	8.20%	26.47	48.04	3	33.33%	0.5	2	50.00%	0.4
Techies	4	6.56%	25.49	24.51	0	0.00%	0.0	4	50.00%	0.8
Clockwerk	6	9.84%	24.51	62.75	4	25.00%	0.7	2	50.00%	0.4
Lone Druid	11	18.03%	23.53	91.18	2	50.00%	0.3	9	11.11%	1.8
Venomancer	2	3.28%	22.55	23.53	2	50.00%	0.3	0	0.00%	0.0
Ogre Magi	2	3.28%	22.55	23.53	2	50.00%	0.3	0	0.00%	0.0
Meepo	1	1.64%	20.59	8.82	0	0.00%	0.0	1	100.00%	0.2
Shadow Fiend	6	9.84%	19.61	49.02	0	0.00%	0.0	6	33.33%	1.2
Invoker	5	8.20%	18.63	54.90	2	0.00%	0.3	3	66.67%	0.6
Keeper of the Light	3	4.92%	17.65	39.22	3	33.33%	0.5	0	0.00%	0.0
Jakiro	4	6.56%	16.67	59.80	4	25.00%	0.7	0	0.00%	0.0
Brewmaster	2	3.28%	15.69	9.80	0	0.00%	0.0	2	50.00%	0.4
Earth Spirit	8	13.11%	14.71	87.25	3	0.00%	0.5	5	40.00%	1.0
Windranger	8	13.11%	13.73	93.14	4	0.00%	0.7	4	50.00%	0.8
Earthshaker	7	11.48%	12.75	95.10	6	16.67%	1.0	1	0.00%	0.2
Spectre	2	3.28%	11.76	26.47	1	0.00%	0.2	1	100.00%	0.2
Arc Warden	4	6.56%	10.78	53.92	1	0.00%	0.2	3	33.33%	0.6
Medusa	5	8.20%	9.80	67.65	2	0.00%	0.3	3	33.33%	0.6
Mirana	2	3.28%	8.82	57.84	2	0.00%	0.3	0	0.00%	0.0
Slardar	1	1.64%	7.84	20.59	0	0.00%	0.0	1	0.00%	0.2
Viper	1	1.64%	7.84	20.59	0	0.00%	0.0	1	0.00%	0.2
Bounty Hunter	1	1.64%	7.84	20.59	0	0.00%	0.0	1	0.00%	0.2
Lycan	1	1.64%	7.84	20.59	0	0.00%	0.0	1	0.00%	0.2
Luna	1	1.64%	3.92	31.37	1	0.00%	0.2	0	0.00%	0.0
Visage	1	1.64%	2.94	20.59	0	0.00%	0.0	1	0.00%	0.2
Abaddon	1	1.64%	2.94	20.59	0	0.00%	0.0	1	0.00%	0.2
Riki	1	1.64%	0.98	31.37	1	0.00%	0.2	0	0.00%	0.0