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): 4 - Median hero bans (mb): 1 - Matches: 45

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

Balance rank	Winrate	Pickrate	Contest Rate
65.4	81.2	53.6	42.0

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Bane	41	91.11%	100.00	56.99	11	81.82%	2.8	30	63.33%	30.0
Keeper of the Light	6	13.33%	98.92	4.30	4	100.00%	1.0	2	100.00%	2.0
Sven	6	13.33%	97.85	1.08	3	100.00%	0.8	3	100.00%	3.0
Tiny	31	68.89%	96.77	62.37	11	63.64%	2.8	20	65.00%	20.0
Brewmaster	19	42.22%	95.70	41.94	7	85.71%	1.8	12	58.33%	12.0
Disruptor	20	44.44%	94.62	48.39	19	68.42%	4.8	1	100.00%	1.0
Clockwerk	34	75.56%	93.55	76.34	9	55.56%	2.3	25	64.00%	25.0
Lycan	31	68.89%	92.47	68.82	9	77.78%	2.3	22	50.00%	22.0
Batrider	24	53.33%	91.40	53.76	8	50.00%	2.0	16	81.25%	16.0
Tusk	40	88.89%	90.32	87.10	15	46.67%	3.8	25	64.00%	25.0
Enchantress	21	46.67%	89.25	51.61	7	57.14%	1.8	14	71.43%	14.0
Terrorblade	23	51.11%	88.17	72.04	7	71.43%	1.8	16	43.75%	16.0
Chaos Knight	7	15.56%	87.10	16.13	3	100.00%	0.8	4	50.00%	4.0
Medusa	18	40.00%	86.02	58.06	6	66.67%	1.5	12	50.00%	12.0
Undying	9	20.00%	84.95	22.58	5	80.00%	1.3	4	50.00%	4.0
Vengeful Spirit	3	6.67%	83.87	3.23	3	100.00%	0.8	0	0.00%	0.0
Shadow Shaman	41	91.11%	82.80	96.77	19	42.11%	4.8	22	45.45%	22.0
Phantom Lancer	32	71.11%	81.72	91.40	9	44.44%	2.3	23	47.83%	23.0
Night Stalker	20	44.44%	80.65	69.89	2	50.00%	0.5	18	55.56%	18.0
Dragon Knight	17	37.78%	79.57	63.44	8	62.50%	2.0	9	44.44%	9.0
Tinker	23	51.11%	78.49	84.95	9	44.44%	2.3	14	57.14%	14.0
Razor	20	44.44%	77.42	79.57	9	55.56%	2.3	11	45.45%	11.0
Sand King	34	75.56%	76.34	95.70	20	45.00%	5.0	14	35.71%	14.0
Broodmother	9	20.00%	75.27	26.88	3	66.67%	0.8	6	66.67%	6.0
Omniknight	34	75.56%	74.19	94.62	4	50.00%	1.0	30	40.00%	30.0
Weaver	5	11.11%	73.12	15.05	4	75.00%	1.0	1	100.00%	1.0
Rubick	16	35.56%	72.04	73.12	11	54.55%	2.8	5	40.00%	5.0
Tidehunter	22	48.89%	70.97	88.17	8	37.50%	2.0	14	50.00%	14.0
Naga Siren	4	8.89%	69.89	11.83	2	100.00%	0.5	2	50.00%	2.0
Templar Assassin	7	15.56%	68.82	25.81	4	50.00%	1.0	3	100.00%	3.0
Beastmaster	10	22.22%	67.74	54.84	7	57.14%	1.8	3	33.33%	3.0
Underlord	6	13.33%	66.67	24.73	5	60.00%	1.3	1	100.00%	1.0
Shadow Fiend	21	46.67%	65.59	89.25	8	62.50%	2.0	13	15.38%	13.0
Puck	34	75.56%	64.52	100.00	13	38.46%	3.3	21	28.57%	21.0
Juggernaut	21	46.67%	63.44	90.32	9	33.33%	2.3	12	50.00%	12.0
Legion Commander	10	22.22%	62.37	60.22	5	40.00%	1.3	5	60.00%	5.0
Bounty Hunter	10	22.22%	62.37	60.22	5	40.00%	1.3	5	60.00%	5.0
Windranger	6	13.33%	60.22	43.01	5	60.00%	1.3	1	0.00%	1.0
Earth Spirit	10	22.22%	59.14	70.97	6	50.00%	1.5	4	25.00%	4.0
Lifestealer	10	22.22%	58.06	67.74	4	25.00%	1.0	6	66.67%	6.0
Nyx Assassin	10	22.22%	56.99	77.42	7	42.86%	1.8	3	33.33%	3.0
Gyrocopter	6	13.33%	55.91	45.16	4	50.00%	1.0	2	50.00%	2.0
Outworld Destroyer	10	22.22%	54.84	75.27	5	20.00%	1.3	5	80.00%	5.0
Bloodseeker	3	6.67%	53.76	12.90	1	100.00%	0.3	2	50.00%	2.0
Queen of Pain	21	46.67%	52.69	98.92	12	25.00%	3.0	9	33.33%	9.0
Invoker	4	8.89%	51.61	23.66	3	66.67%	0.8	1	0.00%	1.0
Silencer	2	4.44%	50.54	2.15	0	0.00%	0.0	2	100.00%	2.0
Witch Doctor	8	17.78%	49.46	78.49	8	37.50%	2.0	0	0.00%	0.0
Elder Titan	9	20.00%	48.39	83.87	8	37.50%	2.0	1	0.00%	1.0
Luna	9	20.00%	47.31	64.52	1	0.00%	0.3	8	50.00%	8.0
Ancient Apparition	10	22.22%	46.24	86.02	8	37.50%	2.0	2	0.00%	2.0
Centaur Warrunner	4	8.89%	45.16	40.86	4	50.00%	1.0	0	0.00%	0.0
Abaddon	9	20.00%	44.09	81.72	5	40.00%	1.3	4	25.00%	4.0
Chen	9	20.00%	43.01	74.19	2	50.00%	0.5	7	28.57%	7.0
Axe	1	2.22%	41.94	7.53	1	100.00%	0.3	0	0.00%	0.0
Arc Warden	1	2.22%	41.94	7.53	1	100.00%	0.3	0	0.00%	0.0
Kunkka	1	2.22%	41.94	7.53	1	100.00%	0.3	0	0.00%	0.0
Doom	6	13.33%	38.71	55.91	4	50.00%	1.0	2	0.00%	2.0
Storm Spirit	4	8.89%	37.63	29.03	2	50.00%	0.5	2	50.00%	2.0
Treant Protector	4	8.89%	37.63	29.03	2	50.00%	0.5	2	50.00%	2.0
Dazzle	5	11.11%	35.48	52.69	5	40.00%	1.3	0	0.00%	0.0
Viper	8	17.78%	34.41	80.65	4	50.00%	1.0	4	0.00%	4.0
Dark Seer	2	4.44%	33.33	13.98	1	100.00%	0.3	1	0.00%	1.0
Magnus	3	6.67%	32.26	21.51	1	0.00%	0.3	2	100.00%	2.0
Death Prophet	13	28.89%	31.18	97.85	8	25.00%	2.0	5	0.00%	5.0
Drow Ranger	2	4.44%	30.11	20.43	2	50.00%	0.5	0	0.00%	0.0
Skywrath Mage	2	4.44%	30.11	20.43	2	50.00%	0.5	0	0.00%	0.0
Bristleback	1	2.22%	27.96	10.75	0	0.00%	0.0	1	100.00%	1.0
Zeus	1	2.22%	27.96	10.75	0	0.00%	0.0	1	100.00%	1.0
Meepo	1	2.22%	27.96	10.75	0	0.00%	0.0	1	100.00%	1.0
Sniper	3	6.67%	24.73	39.78	2	50.00%	0.5	1	0.00%	1.0
Winter Wyvern	10	22.22%	23.66	93.55	5	20.00%	1.3	5	20.00%	5.0
Pugna	4	8.89%	22.58	50.54	2	50.00%	0.5	2	0.00%	2.0
Slardar	4	8.89%	22.58	50.54	2	50.00%	0.5	2	0.00%	2.0
Lone Druid	3	6.67%	20.43	47.31	3	33.33%	0.8	0	0.00%	0.0
Ursa	3	6.67%	20.43	47.31	3	33.33%	0.8	0	0.00%	0.0
Faceless Void	6	13.33%	18.28	82.80	3	0.00%	0.8	3	66.67%	3.0
Monkey King	4	8.89%	17.20	66.67	4	25.00%	1.0	0	0.00%	0.0
Mirana	4	8.89%	17.20	66.67	4	25.00%	1.0	0	0.00%	0.0
Timbersaw	3	6.67%	15.05	44.09	1	0.00%	0.3	2	50.00%	2.0
Huskar	5	11.11%	13.98	61.29	0	0.00%	0.0	5	20.00%	5.0
Enigma	6	13.33%	12.90	92.47	4	0.00%	1.0	2	50.00%	2.0
Spectre	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Wraith King	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Jakiro	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Spirit Breaker	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Ogre Magi	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Warlock	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Venomancer	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Crystal Maiden	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Earthshaker	1	2.22%	11.83	38.71	1	0.00%	0.3	0	0.00%	0.0
Slark	1	2.22%	2.15	18.28	0	0.00%	0.0	1	0.00%	1.0
Ember Spirit	1	2.22%	2.15	18.28	0	0.00%	0.0	1	0.00%	1.0