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): 5 - Matches: 71

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

Balance rank	Winrate	Pickrate	Contest Rate
54.7	68.6	40.9	40.9

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Dazzle	46	64.79%	100.00	56.99	25	76.00%	5.0	21	57.14%	4.2
Gyrocopter	67	94.37%	98.92	73.12	26	76.92%	5.2	41	46.34%	8.2
Templar Assassin	14	19.72%	97.85	7.53	8	100.00%	1.6	6	50.00%	1.2
Undying	49	69.01%	96.77	69.89	19	52.63%	3.8	30	70.00%	6.0
Leshrac	50	70.42%	95.70	75.27	19	47.37%	3.8	31	70.97%	6.2
Visage	25	35.21%	94.62	52.69	5	60.00%	1.0	20	70.00%	4.0
Dark Seer	32	45.07%	93.55	64.52	14	64.29%	2.8	18	55.56%	3.6
Phantom Lancer	29	40.85%	92.47	60.22	13	61.54%	2.6	16	62.50%	3.2
Juggernaut	11	15.49%	91.40	11.83	4	100.00%	0.8	7	57.14%	1.4
Sand King	19	26.76%	90.32	45.16	11	72.73%	2.2	8	50.00%	1.6
Dragon Knight	19	26.76%	89.25	46.24	13	76.92%	2.6	6	16.67%	1.2
Lion	31	43.66%	88.17	67.74	27	55.56%	5.4	4	75.00%	0.8
Rubick	39	54.93%	87.10	79.57	30	53.33%	6.0	9	55.56%	1.8
Naga Siren	17	23.94%	86.02	44.09	5	80.00%	1.0	12	58.33%	2.4
Bristleback	27	38.03%	84.95	63.44	10	60.00%	2.0	17	58.82%	3.4
Nature's Prophet	10	14.08%	83.87	16.13	7	85.71%	1.4	3	33.33%	0.6
Pudge	6	8.45%	82.80	5.38	4	100.00%	0.8	2	50.00%	0.4
Queen of Pain	70	98.59%	81.72	95.70	33	51.52%	6.6	37	32.43%	7.4
Clockwerk	55	77.46%	80.65	91.40	35	48.57%	7.0	20	40.00%	4.0
Bounty Hunter	30	42.25%	79.57	72.04	13	61.54%	2.6	17	41.18%	3.4
Omniknight	4	5.63%	78.49	3.23	2	100.00%	0.4	2	100.00%	0.4
Spirit Breaker	30	42.25%	77.42	76.34	11	54.55%	2.2	19	47.37%	3.8
Invoker	10	14.08%	76.34	23.66	4	75.00%	0.8	6	66.67%	1.2
Disruptor	27	38.03%	75.27	74.19	16	50.00%	3.2	11	54.55%	2.2
Earthshaker	40	56.34%	74.19	89.25	28	46.43%	5.6	12	33.33%	2.4
Lina	40	56.34%	73.12	90.32	25	40.00%	5.0	15	53.33%	3.0
Shadow Fiend	52	73.24%	72.04	97.85	24	33.33%	4.8	28	50.00%	5.6
Phoenix	8	11.27%	70.97	24.73	5	60.00%	1.0	3	100.00%	0.6
Broodmother	34	47.89%	69.89	86.02	4	50.00%	0.8	30	43.33%	6.0
Ancient Apparition	18	25.35%	68.82	65.59	9	44.44%	1.8	9	66.67%	1.8
Windranger	12	16.90%	67.74	47.31	7	71.43%	1.4	5	20.00%	1.0
Viper	40	56.34%	66.67	93.55	18	33.33%	3.6	22	50.00%	4.4
Beastmaster	13	18.31%	65.59	58.06	9	55.56%	1.8	4	50.00%	0.8
Io	46	64.79%	64.52	96.77	10	30.00%	2.0	36	41.67%	7.2
Storm Spirit	32	45.07%	63.44	87.10	14	28.57%	2.8	18	61.11%	3.6
Puck	10	14.08%	62.37	51.61	8	50.00%	1.6	2	100.00%	0.4
Anti-Mage	18	25.35%	61.29	70.97	8	37.50%	1.6	10	60.00%	2.0
Weaver	4	5.63%	60.22	6.45	2	100.00%	0.4	2	50.00%	0.4
Vengeful Spirit	10	14.08%	59.14	59.14	10	50.00%	2.0	0	0.00%	0.0
Razor	7	9.86%	58.06	40.86	5	60.00%	1.0	2	50.00%	0.4
Huskar	14	19.72%	56.99	62.37	1	0.00%	0.2	13	53.85%	2.6
Tiny	4	5.63%	55.91	9.68	3	66.67%	0.6	1	100.00%	0.2
Phantom Assassin	4	5.63%	55.91	9.68	3	66.67%	0.6	1	100.00%	0.2
Slark	14	19.72%	53.76	68.82	7	42.86%	1.4	7	42.86%	1.4
Enigma	5	7.04%	52.69	18.28	3	66.67%	0.6	2	50.00%	0.4
Legion Commander	5	7.04%	52.69	18.28	3	66.67%	0.6	2	50.00%	0.4
Tusk	15	21.13%	50.54	78.49	8	37.50%	1.6	7	42.86%	1.4
Tidehunter	2	2.82%	49.46	2.15	1	100.00%	0.2	1	100.00%	0.2
Skywrath Mage	15	21.13%	48.39	82.80	12	33.33%	2.4	3	66.67%	0.6
Witch Doctor	23	32.39%	47.31	94.62	18	33.33%	3.6	5	20.00%	1.0
Chen	18	25.35%	46.24	83.87	7	57.14%	1.4	11	9.09%	2.2
Ember Spirit	9	12.68%	45.16	55.91	4	25.00%	0.8	5	80.00%	1.0
Ursa	5	7.04%	44.09	37.63	4	50.00%	0.8	1	100.00%	0.2
Winter Wyvern	13	18.31%	43.01	77.42	6	16.67%	1.2	7	71.43%	1.4
Mirana	3	4.23%	41.94	10.75	3	66.67%	0.6	0	0.00%	0.0
Warlock	5	7.04%	40.86	25.81	2	100.00%	0.4	3	0.00%	0.6
Brewmaster	4	5.63%	39.78	22.58	3	66.67%	0.6	1	0.00%	0.2
Night Stalker	5	7.04%	38.71	39.78	3	66.67%	0.6	2	0.00%	0.4
Shadow Demon	18	25.35%	37.63	92.47	8	12.50%	1.6	10	50.00%	2.0
Crystal Maiden	4	5.63%	36.56	38.71	4	50.00%	0.8	0	0.00%	0.0
Treant Protector	3	4.23%	35.48	12.90	2	50.00%	0.4	1	100.00%	0.2
Zeus	11	15.49%	34.41	80.65	5	20.00%	1.0	6	50.00%	1.2
Nyx Assassin	13	18.31%	33.33	88.17	9	33.33%	1.8	4	0.00%	0.8
Magnus	4	5.63%	32.26	27.96	2	50.00%	0.4	2	50.00%	0.4
Lone Druid	4	5.63%	32.26	27.96	2	50.00%	0.4	2	50.00%	0.4
Tinker	7	9.86%	30.11	61.29	4	25.00%	0.8	3	66.67%	0.6
Drow Ranger	20	28.17%	29.03	98.92	8	25.00%	1.6	12	16.67%	2.4
Centaur Warrunner	1	1.41%	27.96	1.08	0	0.00%	0.0	1	100.00%	0.2
Faceless Void	1	1.41%	27.96	4.30	0	0.00%	0.0	1	100.00%	0.2
Bloodseeker	8	11.27%	25.81	81.72	2	0.00%	0.4	6	33.33%	1.2
Keeper of the Light	7	9.86%	24.73	84.95	5	20.00%	1.0	2	0.00%	0.4
Slardar	2	2.82%	23.66	21.51	1	0.00%	0.2	1	100.00%	0.2
Lifestealer	2	2.82%	23.66	21.51	1	0.00%	0.2	1	100.00%	0.2
Medusa	2	2.82%	23.66	21.51	1	0.00%	0.2	1	100.00%	0.2
Techies	4	5.63%	20.43	54.84	1	0.00%	0.2	3	33.33%	0.6
Clinkz	3	4.23%	19.35	53.76	2	0.00%	0.4	1	100.00%	0.2
Enchantress	4	5.63%	18.28	66.67	3	0.00%	0.6	1	100.00%	0.2
Doom	1	1.41%	17.20	36.56	1	0.00%	0.2	0	0.00%	0.0
Ogre Magi	1	1.41%	17.20	36.56	1	0.00%	0.2	0	0.00%	0.0
Pugna	1	1.41%	15.05	15.05	0	0.00%	0.0	1	0.00%	0.2
Sven	8	11.27%	13.98	100.00	8	0.00%	1.6	0	0.00%	0.0
Venomancer	1	1.41%	12.90	15.05	0	0.00%	0.0	1	0.00%	0.2
Silencer	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Alchemist	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Morphling	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Bane	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Spectre	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Troll Warlord	1	1.41%	11.83	36.56	1	0.00%	0.2	0	0.00%	0.0
Lycan	2	2.82%	5.38	50.54	1	0.00%	0.2	1	0.00%	0.2
Shadow Shaman	2	2.82%	5.38	50.54	1	0.00%	0.2	1	0.00%	0.2
Riki	2	2.82%	5.38	50.54	1	0.00%	0.2	1	0.00%	0.2
Axe	2	2.82%	2.15	41.94	0	0.00%	0.0	2	0.00%	0.4
Meepo	2	2.82%	2.15	44.09	0	0.00%	0.0	2	0.00%	0.4