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): 3 - Median hero bans (mb): 5 - Matches: 43

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

Balance rank	Winrate	Pickrate	Contest Rate
53.5	69.7	40.9	30.4

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Clockwerk	17	39.53%	100.00	16.28	12	91.67%	4.0	5	60.00%	1.0
Axe	32	74.42%	98.84	55.81	9	77.78%	3.0	23	65.22%	4.6
Phantom Lancer	39	90.70%	97.67	65.12	9	77.78%	3.0	30	60.00%	6.0
Bane	21	48.84%	96.51	39.53	7	71.43%	2.3	14	78.57%	2.8
Lycan	39	90.70%	95.35	72.09	12	75.00%	4.0	27	51.85%	5.4
Io	43	100.00%	94.19	88.37	1	100.00%	0.3	42	50.00%	8.4
Warlock	28	65.12%	93.02	70.93	15	60.00%	5.0	13	53.85%	2.6
Leshrac	26	60.47%	91.86	69.77	19	63.16%	6.3	7	28.57%	1.4
Bounty Hunter	27	62.79%	90.70	73.26	8	75.00%	2.7	19	42.11%	3.8
Doom	22	51.16%	89.53	63.95	10	70.00%	3.3	12	41.67%	2.4
Templar Assassin	8	18.60%	88.37	13.95	2	100.00%	0.7	6	66.67%	1.2
Visage	12	27.91%	87.21	41.86	6	66.67%	2.0	6	66.67%	1.2
Luna	23	53.49%	86.05	77.91	9	55.56%	3.0	14	50.00%	2.8
Naga Siren	37	86.05%	84.88	94.19	21	47.62%	7.0	16	37.50%	3.2
Disruptor	28	65.12%	83.72	87.21	20	45.00%	6.7	8	62.50%	1.6
Jakiro	15	34.88%	82.56	58.14	11	63.64%	3.7	4	25.00%	0.8
Juggernaut	9	20.93%	81.40	29.07	4	75.00%	1.3	5	60.00%	1.0
Faceless Void	12	27.91%	80.23	43.02	4	50.00%	1.3	8	75.00%	1.6
Night Stalker	35	81.40%	79.07	95.35	10	30.00%	3.3	25	52.00%	5.0
Kunkka	18	41.86%	77.91	68.60	7	71.43%	2.3	11	27.27%	2.2
Razor	4	9.30%	76.74	11.63	3	100.00%	1.0	1	0.00%	0.2
Pangolier	7	16.28%	75.58	23.26	3	66.67%	1.0	4	75.00%	0.8
Lina	13	30.23%	74.42	56.98	5	60.00%	1.7	8	50.00%	1.6
Sand King	22	51.16%	73.26	86.05	14	42.86%	4.7	8	50.00%	1.6
Windranger	25	58.14%	72.09	89.53	15	46.67%	5.0	10	30.00%	2.0
Gyrocopter	18	41.86%	70.93	80.23	12	50.00%	4.0	6	33.33%	1.2
Elder Titan	5	11.63%	69.77	15.12	3	66.67%	1.0	2	100.00%	0.4
Ember Spirit	16	37.21%	68.60	76.74	9	44.44%	3.0	7	57.14%	1.4
Death Prophet	13	30.23%	67.44	59.30	4	50.00%	1.3	9	55.56%	1.8
Dragon Knight	16	37.21%	66.28	75.58	7	42.86%	2.3	9	55.56%	1.8
Shadow Demon	6	13.95%	65.12	24.42	3	66.67%	1.0	3	66.67%	0.6
Chen	42	97.67%	63.95	100.00	2	50.00%	0.7	40	30.00%	8.0
Pudge	2	4.65%	62.79	10.47	2	100.00%	0.7	0	0.00%	0.0
Pugna	16	37.21%	61.63	81.40	7	57.14%	2.3	9	22.22%	1.8
Skywrath Mage	30	69.77%	60.47	98.84	15	33.33%	5.0	15	33.33%	3.0
Zeus	13	30.23%	59.30	74.42	7	42.86%	2.3	6	50.00%	1.2
Tusk	6	13.95%	58.14	30.23	4	50.00%	1.3	2	100.00%	0.4
Witch Doctor	7	16.28%	56.98	46.51	6	50.00%	2.0	1	100.00%	0.2
Beastmaster	20	46.51%	55.81	93.02	11	27.27%	3.7	9	55.56%	1.8
Nyx Assassin	3	6.98%	54.65	12.79	2	100.00%	0.7	1	0.00%	0.2
Abaddon	2	4.65%	53.49	8.14	1	100.00%	0.3	1	100.00%	0.2
Monkey King	2	4.65%	53.49	8.14	1	100.00%	0.3	1	100.00%	0.2
Mirana	6	13.95%	51.16	44.19	4	50.00%	1.3	2	50.00%	0.4
Lone Druid	5	11.63%	50.00	27.91	2	50.00%	0.7	3	66.67%	0.6
Nature's Prophet	2	4.65%	48.84	5.81	0	0.00%	0.0	2	100.00%	0.4
Storm Spirit	9	20.93%	47.67	67.44	4	25.00%	1.3	5	60.00%	1.0
Queen of Pain	5	11.63%	46.51	40.70	3	33.33%	1.0	2	100.00%	0.4
Chaos Knight	4	9.30%	45.35	38.37	4	50.00%	1.3	0	0.00%	0.0
Shadow Fiend	6	13.95%	44.19	51.16	3	66.67%	1.0	3	0.00%	0.6
Bloodseeker	5	11.63%	43.02	37.21	1	0.00%	0.3	4	75.00%	0.8
Dark Willow	1	2.33%	41.86	3.49	1	100.00%	0.3	0	0.00%	0.0
Medusa	1	2.33%	41.86	3.49	1	100.00%	0.3	0	0.00%	0.0
Bristleback	1	2.33%	41.86	3.49	1	100.00%	0.3	0	0.00%	0.0
Lifestealer	15	34.88%	38.37	96.51	6	16.67%	2.0	9	33.33%	1.8
Brewmaster	7	16.28%	37.21	66.28	2	0.00%	0.7	5	60.00%	1.0
Viper	5	11.63%	36.05	54.65	3	33.33%	1.0	2	50.00%	0.4
Oracle	5	11.63%	34.88	60.47	4	25.00%	1.3	1	100.00%	0.2
Phantom Assassin	2	4.65%	33.72	22.09	2	50.00%	0.7	0	0.00%	0.0
Dark Seer	2	4.65%	33.72	22.09	2	50.00%	0.7	0	0.00%	0.0
Legion Commander	2	4.65%	33.72	22.09	2	50.00%	0.7	0	0.00%	0.0
Slardar	2	4.65%	33.72	22.09	2	50.00%	0.7	0	0.00%	0.0
Lion	2	4.65%	33.72	22.09	2	50.00%	0.7	0	0.00%	0.0
Morphling	7	16.28%	27.91	82.56	5	20.00%	1.7	2	50.00%	0.4
Huskar	1	2.33%	26.74	9.30	0	0.00%	0.0	1	100.00%	0.2
Weaver	1	2.33%	26.74	4.65	0	0.00%	0.0	1	100.00%	0.2
Underlord	9	20.93%	24.42	90.70	5	0.00%	1.7	4	75.00%	0.8
Slark	12	27.91%	23.26	97.67	5	20.00%	1.7	7	14.29%	1.4
Treant Protector	4	9.30%	22.09	50.00	2	0.00%	0.7	2	100.00%	0.4
Omniknight	4	9.30%	22.09	50.00	2	0.00%	0.7	2	100.00%	0.4
Spirit Breaker	3	6.98%	19.77	45.35	3	33.33%	1.0	0	0.00%	0.0
Undying	7	16.28%	18.60	91.86	6	16.67%	2.0	1	0.00%	0.2
Techies	2	4.65%	17.44	26.74	1	0.00%	0.3	1	100.00%	0.2
Broodmother	2	4.65%	17.44	26.74	1	0.00%	0.3	1	100.00%	0.2
Tinker	4	9.30%	15.12	47.67	0	0.00%	0.0	4	25.00%	0.8
Outworld Destroyer	5	11.63%	13.95	79.07	2	0.00%	0.7	3	33.33%	0.6
Dazzle	1	2.33%	12.79	36.05	1	0.00%	0.3	0	0.00%	0.0
Rubick	1	2.33%	12.79	36.05	1	0.00%	0.3	0	0.00%	0.0
Vengeful Spirit	1	2.33%	12.79	36.05	1	0.00%	0.3	0	0.00%	0.0
Drow Ranger	2	4.65%	9.30	52.33	1	0.00%	0.3	1	0.00%	0.2
Winter Wyvern	1	2.33%	8.14	36.05	1	0.00%	0.3	0	0.00%	0.0
Silencer	1	2.33%	8.14	36.05	1	0.00%	0.3	0	0.00%	0.0
Troll Warlord	3	6.98%	5.81	84.88	3	0.00%	1.0	0	0.00%	0.0
Sven	2	4.65%	4.65	62.79	2	0.00%	0.7	0	0.00%	0.0
Venomancer	2	4.65%	4.65	62.79	2	0.00%	0.7	0	0.00%	0.0
Batrider	3	6.98%	2.33	84.88	3	0.00%	1.0	0	0.00%	0.0
Spectre	2	4.65%	1.16	54.65	1	0.00%	0.3	1	0.00%	0.2