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: 43

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

Balance rank	Winrate	Pickrate	Contest Rate
55.1	66.7	44.3	41.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Drow Ranger	22	51.16%	100.00	27.27	8	87.50%	2.0	14	71.43%	2.8
Mirana	29	67.44%	98.86	53.41	12	83.33%	3.0	17	52.94%	3.4
Naga Siren	39	90.70%	97.73	75.00	13	53.85%	3.3	26	61.54%	5.2
Templar Assassin	24	55.81%	96.59	56.82	6	83.33%	1.5	18	55.56%	3.6
Bloodseeker	42	97.67%	95.45	84.09	12	66.67%	3.0	30	46.67%	6.0
Windranger	38	88.37%	94.32	80.68	24	50.00%	6.0	14	71.43%	2.8
Beastmaster	14	32.56%	93.18	29.55	5	100.00%	1.3	9	44.44%	1.8
Brewmaster	10	23.26%	92.05	19.32	4	100.00%	1.0	6	50.00%	1.2
Phantom Lancer	33	76.74%	90.91	77.27	11	54.55%	2.8	22	54.55%	4.4
Faceless Void	14	32.56%	89.77	46.59	8	75.00%	2.0	6	50.00%	1.2
Io	43	100.00%	88.64	93.18	0	0.00%	0.0	43	48.84%	8.6
Leshrac	11	25.58%	87.50	28.41	7	71.43%	1.8	4	75.00%	0.8
Morphling	12	27.91%	86.36	30.68	5	80.00%	1.3	7	57.14%	1.4
Witch Doctor	30	69.77%	85.23	78.41	19	57.89%	4.8	11	36.36%	2.2
Chen	40	93.02%	84.09	92.05	5	80.00%	1.3	35	40.00%	7.0
Lycan	41	95.35%	82.95	95.45	5	40.00%	1.3	36	47.22%	7.2
Storm Spirit	12	27.91%	81.82	44.32	6	66.67%	1.5	6	66.67%	1.2
Warlock	23	53.49%	80.68	70.45	16	56.25%	4.0	7	42.86%	1.4
Phoenix	9	20.93%	79.55	38.64	6	83.33%	1.5	3	0.00%	0.6
Night Stalker	29	67.44%	78.41	90.91	10	20.00%	2.5	19	68.42%	3.8
Dragon Knight	12	27.91%	77.27	54.55	7	57.14%	1.8	5	60.00%	1.0
Broodmother	12	27.91%	76.14	51.14	3	66.67%	0.8	9	55.56%	1.8
Tusk	5	11.63%	75.00	14.77	4	75.00%	1.0	1	100.00%	0.2
Ember Spirit	18	41.86%	73.86	67.05	10	40.00%	2.5	8	75.00%	1.6
Skywrath Mage	22	51.16%	72.73	86.36	16	43.75%	4.0	6	50.00%	1.2
Jakiro	19	44.19%	71.59	81.82	13	46.15%	3.3	6	33.33%	1.2
Clockwerk	19	44.19%	70.45	82.95	13	53.85%	3.3	6	0.00%	1.2
Queen of Pain	9	20.93%	69.32	48.86	5	60.00%	1.3	4	50.00%	0.8
Oracle	4	9.30%	68.18	17.05	4	75.00%	1.0	0	0.00%	0.0
Slardar	4	9.30%	68.18	17.05	4	75.00%	1.0	0	0.00%	0.0
Slark	9	20.93%	65.91	40.91	1	0.00%	0.3	8	75.00%	1.6
Medusa	8	18.60%	64.77	39.77	2	50.00%	0.5	6	66.67%	1.2
Tidehunter	5	11.63%	63.64	18.18	2	100.00%	0.5	3	33.33%	0.6
Elder Titan	8	18.60%	62.50	52.27	5	40.00%	1.3	3	100.00%	0.6
Undying	12	27.91%	61.36	65.91	8	37.50%	2.0	4	75.00%	0.8
Underlord	10	23.26%	60.23	59.09	4	50.00%	1.0	6	50.00%	1.2
Monkey King	10	23.26%	60.23	59.09	4	50.00%	1.0	6	50.00%	1.2
Huskar	12	27.91%	57.95	63.64	3	66.67%	0.8	9	33.33%	1.8
Venomancer	17	39.53%	56.82	89.77	8	50.00%	2.0	9	11.11%	1.8
Sand King	11	25.58%	55.68	72.73	9	33.33%	2.3	2	100.00%	0.4
Nature's Prophet	7	16.28%	54.55	50.00	3	33.33%	0.8	4	75.00%	0.8
Death Prophet	9	20.93%	53.41	62.50	5	60.00%	1.3	4	0.00%	0.8
Lina	13	30.23%	52.27	85.23	7	28.57%	1.8	6	50.00%	1.2
Pangolier	11	25.58%	51.14	76.14	8	37.50%	2.0	3	33.33%	0.6
Magnus	10	23.26%	50.00	71.59	6	33.33%	1.5	4	50.00%	0.8
Clinkz	4	9.30%	48.86	26.14	3	66.67%	0.8	1	0.00%	0.2
Bane	14	32.56%	47.73	94.32	8	25.00%	2.0	6	33.33%	1.2
Bristleback	1	2.33%	46.59	9.09	1	100.00%	0.3	0	0.00%	0.0
Gyrocopter	1	2.33%	46.59	9.09	1	100.00%	0.3	0	0.00%	0.0
Alchemist	1	2.33%	46.59	9.09	1	100.00%	0.3	0	0.00%	0.0
Ursa	1	2.33%	46.59	4.55	1	100.00%	0.3	0	0.00%	0.0
Puck	1	2.33%	46.59	4.55	1	100.00%	0.3	0	0.00%	0.0
Enigma	1	2.33%	46.59	4.55	1	100.00%	0.3	0	0.00%	0.0
Dark Seer	6	13.95%	39.77	60.23	4	50.00%	1.0	2	0.00%	0.4
Shadow Fiend	5	11.63%	38.64	47.73	2	50.00%	0.5	3	33.33%	0.6
Kunkka	6	13.95%	37.50	64.77	6	33.33%	1.5	0	0.00%	0.0
Spirit Breaker	2	4.65%	36.36	13.64	1	100.00%	0.3	1	0.00%	0.2
Timbersaw	2	4.65%	36.36	13.64	1	100.00%	0.3	1	0.00%	0.2
Abaddon	2	4.65%	36.36	13.64	1	100.00%	0.3	1	0.00%	0.2
Treant Protector	5	11.63%	32.95	55.68	3	33.33%	0.8	2	50.00%	0.4
Doom	12	27.91%	31.82	96.59	7	14.29%	1.8	5	40.00%	1.0
Spectre	7	16.28%	30.68	73.86	4	0.00%	1.0	3	100.00%	0.6
Disruptor	4	9.30%	29.55	42.05	1	0.00%	0.3	3	66.67%	0.6
Razor	4	9.30%	28.41	43.18	1	100.00%	0.3	3	0.00%	0.6
Winter Wyvern	2	4.65%	27.27	22.73	2	50.00%	0.5	0	0.00%	0.0
Silencer	2	4.65%	27.27	22.73	2	50.00%	0.5	0	0.00%	0.0
Zeus	2	4.65%	27.27	22.73	2	50.00%	0.5	0	0.00%	0.0
Batrider	1	2.33%	23.86	5.68	0	0.00%	0.0	1	100.00%	0.2
Nyx Assassin	1	2.33%	23.86	1.14	0	0.00%	0.0	1	100.00%	0.2
Troll Warlord	1	2.33%	23.86	10.23	0	0.00%	0.0	1	100.00%	0.2
Axe	11	25.58%	20.45	97.73	7	14.29%	1.8	4	25.00%	0.8
Omniknight	8	18.60%	19.32	87.50	2	0.00%	0.5	6	33.33%	1.2
Visage	8	18.60%	18.18	88.64	3	0.00%	0.8	5	40.00%	1.0
Pugna	2	4.65%	17.05	25.00	1	0.00%	0.3	1	100.00%	0.2
Chaos Knight	2	4.65%	17.05	25.00	1	0.00%	0.3	1	100.00%	0.2
Tinker	4	9.30%	14.77	69.32	3	0.00%	0.8	1	100.00%	0.2
Rubick	4	9.30%	14.77	69.32	3	0.00%	0.8	1	100.00%	0.2
Luna	9	20.93%	12.50	100.00	5	0.00%	1.3	4	25.00%	0.8
Lifestealer	6	13.95%	11.36	98.86	4	0.00%	1.0	2	0.00%	0.4
Weaver	1	2.33%	10.23	37.50	1	0.00%	0.3	0	0.00%	0.0
Lion	1	2.33%	10.23	37.50	1	0.00%	0.3	0	0.00%	0.0
Dark Willow	3	6.98%	7.95	79.55	3	0.00%	0.8	0	0.00%	0.0
Outworld Destroyer	2	4.65%	6.82	45.45	0	0.00%	0.0	2	0.00%	0.4
Dazzle	1	2.33%	5.68	37.50	1	0.00%	0.3	0	0.00%	0.0
Earthshaker	2	4.65%	4.55	61.36	2	0.00%	0.5	0	0.00%	0.0
Tiny	1	2.33%	3.41	37.50	1	0.00%	0.3	0	0.00%	0.0
Pudge	1	2.33%	3.41	37.50	1	0.00%	0.3	0	0.00%	0.0
Phantom Assassin	1	2.33%	3.41	37.50	1	0.00%	0.3	0	0.00%	0.0