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): 5 - Matches: 34

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

Balance rank	Winrate	Pickrate	Contest Rate
56.2	78.2	33.9	34.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Brewmaster	27	79.41%	100.00	41.38	7	100.00%	1.8	20	65.00%	4.0
Pangolier	21	61.76%	98.85	28.74	10	80.00%	2.5	11	81.82%	2.2
Clockwerk	8	23.53%	97.70	12.64	6	100.00%	1.5	2	50.00%	0.4
Kunkka	32	94.12%	96.55	75.86	6	83.33%	1.5	26	50.00%	5.2
Terrorblade	17	50.00%	95.40	45.98	10	70.00%	2.5	7	71.43%	1.4
Timbersaw	27	79.41%	94.25	70.11	6	66.67%	1.5	21	57.14%	4.2
Shadow Demon	27	79.41%	93.10	73.56	8	75.00%	2.0	19	47.37%	3.8
Batrider	25	73.53%	91.95	68.97	10	60.00%	2.5	15	60.00%	3.0
Disruptor	16	47.06%	90.80	50.57	13	69.23%	3.3	3	33.33%	0.6
Death Prophet	20	58.82%	89.66	64.37	11	54.55%	2.8	9	66.67%	1.8
Mars	18	52.94%	88.51	60.92	5	60.00%	1.3	13	53.85%	2.6
Doom	22	64.71%	87.36	79.31	7	42.86%	1.8	15	60.00%	3.0
Tiny	29	85.29%	86.21	94.25	9	44.44%	2.3	20	45.00%	4.0
Chen	20	58.82%	85.06	80.46	6	66.67%	1.5	14	35.71%	2.8
Gyrocopter	22	64.71%	83.91	88.51	7	28.57%	1.8	15	60.00%	3.0
Rubick	22	64.71%	82.76	89.66	14	42.86%	3.5	8	50.00%	1.6
Windranger	12	35.29%	81.61	57.47	4	100.00%	1.0	8	12.50%	1.6
Slark	3	8.82%	80.46	11.49	1	100.00%	0.3	2	100.00%	0.4
Viper	3	8.82%	80.46	11.49	1	100.00%	0.3	2	100.00%	0.4
Vengeful Spirit	6	17.65%	78.16	24.14	4	75.00%	1.0	2	50.00%	0.4
Slardar	5	14.71%	77.01	16.09	3	66.67%	0.8	2	100.00%	0.4
Bloodseeker	10	29.41%	75.86	49.43	4	50.00%	1.0	6	66.67%	1.2
Sven	15	44.12%	74.71	74.71	8	37.50%	2.0	7	71.43%	1.4
Monkey King	7	20.59%	73.56	26.44	2	50.00%	0.5	5	80.00%	1.0
Primal Beast	22	64.71%	72.41	91.95	10	30.00%	2.5	12	58.33%	2.4
Dragon Knight	25	73.53%	71.26	97.70	6	16.67%	1.5	19	52.63%	3.8
Templar Assassin	13	38.24%	70.11	71.26	4	50.00%	1.0	9	44.44%	1.8
Faceless Void	14	41.18%	68.97	77.01	6	50.00%	1.5	8	37.50%	1.6
Undying	7	20.59%	67.82	27.59	1	0.00%	0.3	6	83.33%	1.2
Morphling	9	26.47%	66.67	47.13	2	50.00%	0.5	7	57.14%	1.4
Hoodwink	10	29.41%	65.52	63.22	7	57.14%	1.8	3	0.00%	0.6
Razor	13	38.24%	64.37	81.61	6	50.00%	1.5	7	28.57%	1.4
Invoker	5	14.71%	63.22	25.29	3	66.67%	0.8	2	50.00%	0.4
Snapfire	2	5.88%	62.07	9.20	1	100.00%	0.3	1	100.00%	0.2
Techies	14	41.18%	60.92	87.36	9	44.44%	2.3	5	20.00%	1.0
Grimstroke	20	58.82%	59.77	100.00	7	14.29%	1.8	13	53.85%	2.6
Centaur Warrunner	10	29.41%	58.62	59.77	3	66.67%	0.8	7	28.57%	1.4
Medusa	6	17.65%	57.47	44.83	3	66.67%	0.8	3	33.33%	0.6
Beastmaster	4	11.76%	56.32	18.39	2	50.00%	0.5	2	100.00%	0.4
Enigma	6	17.65%	55.17	29.89	1	100.00%	0.3	5	40.00%	1.0
Crystal Maiden	15	44.12%	54.02	95.40	12	33.33%	3.0	3	33.33%	0.6
Leshrac	9	26.47%	52.87	67.82	5	60.00%	1.3	4	0.00%	0.8
Muerta	3	8.82%	51.72	17.24	3	66.67%	0.8	0	0.00%	0.0
Night Stalker	3	8.82%	50.57	13.79	1	100.00%	0.3	2	50.00%	0.4
Lina	11	32.35%	49.43	82.76	5	40.00%	1.3	6	33.33%	1.2
Troll Warlord	9	26.47%	48.28	66.67	3	66.67%	0.8	6	16.67%	1.2
Puck	14	41.18%	47.13	90.80	4	25.00%	1.0	10	40.00%	2.0
Dazzle	2	5.88%	45.98	1.15	0	0.00%	0.0	2	100.00%	0.4
Lifestealer	15	44.12%	44.83	96.55	4	50.00%	1.0	11	18.18%	2.2
Dawnbreaker	7	20.59%	43.68	51.72	2	0.00%	0.5	5	80.00%	1.0
Ember Spirit	7	20.59%	42.53	54.02	2	50.00%	0.5	5	40.00%	1.0
Phantom Assassin	4	11.76%	41.38	43.68	4	50.00%	1.0	0	0.00%	0.0
Enchantress	4	11.76%	41.38	43.68	4	50.00%	1.0	0	0.00%	0.0
Tusk	9	26.47%	39.08	83.91	9	33.33%	2.3	0	0.00%	0.0
Earth Spirit	3	8.82%	37.93	19.54	2	50.00%	0.5	1	100.00%	0.2
Lycan	1	2.94%	36.78	5.75	1	100.00%	0.3	0	0.00%	0.0
Pugna	1	2.94%	36.78	5.75	1	100.00%	0.3	0	0.00%	0.0
Bane	1	2.94%	36.78	5.75	1	100.00%	0.3	0	0.00%	0.0
Dark Seer	6	17.65%	33.33	48.28	1	0.00%	0.3	5	60.00%	1.0
Alchemist	6	17.65%	32.18	72.41	6	33.33%	1.5	0	0.00%	0.0
Drow Ranger	2	5.88%	31.03	14.94	1	100.00%	0.3	1	0.00%	0.2
Zeus	10	29.41%	29.89	93.10	6	16.67%	1.5	4	50.00%	0.8
Magnus	11	32.35%	28.74	98.85	3	0.00%	0.8	8	37.50%	1.6
Tidehunter	7	20.59%	27.59	85.06	5	20.00%	1.3	2	50.00%	0.4
Lion	1	2.94%	26.44	2.30	0	0.00%	0.0	1	100.00%	0.2
Ancient Apparition	1	2.94%	26.44	8.05	0	0.00%	0.0	1	100.00%	0.2
Earthshaker	1	2.94%	26.44	8.05	0	0.00%	0.0	1	100.00%	0.2
Weaver	5	14.71%	22.99	52.87	1	0.00%	0.3	4	50.00%	0.8
Keeper of the Light	7	20.59%	21.84	78.16	1	0.00%	0.3	6	33.33%	1.2
Luna	5	14.71%	20.69	58.62	2	50.00%	0.5	3	0.00%	0.6
Dark Willow	4	11.76%	19.54	65.52	4	25.00%	1.0	0	0.00%	0.0
Huskar	5	14.71%	18.39	62.07	0	0.00%	0.0	5	20.00%	1.0
Wraith King	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Silencer	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Ursa	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Nature's Prophet	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Chaos Knight	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Underlord	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Oracle	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Queen of Pain	1	2.94%	17.24	40.23	1	0.00%	0.3	0	0.00%	0.0
Mirana	1	2.94%	8.05	22.99	0	0.00%	0.0	1	0.00%	0.2
Naga Siren	1	2.94%	8.05	22.99	0	0.00%	0.0	1	0.00%	0.2
Storm Spirit	1	2.94%	5.75	40.23	1	0.00%	0.3	0	0.00%	0.0
Axe	2	5.88%	4.60	56.32	1	0.00%	0.3	1	0.00%	0.2
Anti-Mage	2	5.88%	4.60	56.32	1	0.00%	0.3	1	0.00%	0.2
Phoenix	3	8.82%	2.30	86.21	3	0.00%	0.8	0	0.00%	0.0
Void Spirit	1	2.94%	1.15	22.99	0	0.00%	0.0	1	0.00%	0.2