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): 3 - Matches: 48

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

Balance rank	Winrate	Pickrate	Contest Rate
60.0	81.5	36.9	41.4

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Death Prophet	31	64.58%	100.00	54.74	8	87.50%	2.7	23	60.87%	7.7
Terrorblade	29	60.42%	98.95	58.95	7	71.43%	2.3	22	63.64%	7.3
Timbersaw	39	81.25%	97.89	83.16	15	66.67%	5.0	24	50.00%	8.0
Riki	37	77.08%	96.84	76.84	11	90.91%	3.7	26	34.62%	8.7
Dark Seer	39	81.25%	95.79	87.37	11	63.64%	3.7	28	50.00%	9.3
Bounty Hunter	26	54.17%	94.74	65.26	5	80.00%	1.7	21	52.38%	7.0
Tidehunter	22	45.83%	93.68	62.11	10	70.00%	3.3	12	50.00%	4.0
Mirana	16	33.33%	92.63	53.68	13	69.23%	4.3	3	33.33%	1.0
Winter Wyvern	15	31.25%	91.58	51.58	11	63.64%	3.7	4	75.00%	1.3
Earth Spirit	25	52.08%	90.53	72.63	14	57.14%	4.7	11	54.55%	3.7
Oracle	27	56.25%	89.47	80.00	15	46.67%	5.0	12	75.00%	4.0
Lifestealer	31	64.58%	88.42	88.42	15	46.67%	5.0	16	62.50%	5.3
Juggernaut	31	64.58%	87.37	89.47	20	55.00%	6.7	11	36.36%	3.7
Slardar	22	45.83%	86.32	70.53	10	60.00%	3.3	12	50.00%	4.0
Disruptor	19	39.58%	85.26	66.32	14	57.14%	4.7	5	60.00%	1.7
Beastmaster	38	79.17%	84.21	96.84	23	56.52%	7.7	15	20.00%	5.0
Templar Assassin	7	14.58%	83.16	14.74	3	100.00%	1.0	4	50.00%	1.3
Lone Druid	22	45.83%	82.11	78.95	7	57.14%	2.3	15	46.67%	5.0
Invoker	29	60.42%	81.05	94.74	12	50.00%	4.0	17	41.18%	5.7
Axe	10	20.83%	80.00	44.21	6	50.00%	2.0	4	100.00%	1.3
Slark	13	27.08%	78.95	61.05	10	60.00%	3.3	3	33.33%	1.0
Huskar	5	10.42%	77.89	11.58	1	100.00%	0.3	4	75.00%	1.3
Lion	22	45.83%	76.84	93.68	19	42.11%	6.3	3	66.67%	1.0
Batrider	36	75.00%	75.79	100.00	20	30.00%	6.7	16	56.25%	5.3
Faceless Void	26	54.17%	74.74	95.79	12	50.00%	4.0	14	28.57%	4.7
Phoenix	14	29.17%	73.68	69.47	10	50.00%	3.3	4	50.00%	1.3
Meepo	8	16.67%	72.63	26.32	1	100.00%	0.3	7	57.14%	2.3
Nyx Assassin	4	8.33%	71.58	10.53	2	100.00%	0.7	2	50.00%	0.7
Ogre Magi	10	20.83%	70.53	60.00	9	55.56%	3.0	1	0.00%	0.3
Vengeful Spirit	15	31.25%	69.47	86.32	13	38.46%	4.3	2	100.00%	0.7
Lich	4	8.33%	68.42	16.84	3	66.67%	1.0	1	100.00%	0.3
Ancient Apparition	4	8.33%	68.42	16.84	3	66.67%	1.0	1	100.00%	0.3
Windranger	2	4.17%	66.32	8.42	1	100.00%	0.3	1	100.00%	0.3
Broodmother	2	4.17%	66.32	8.42	1	100.00%	0.3	1	100.00%	0.3
Undying	2	4.17%	66.32	8.42	1	100.00%	0.3	1	100.00%	0.3
Dazzle	10	20.83%	63.16	73.68	9	44.44%	3.0	1	0.00%	0.3
Naga Siren	6	12.50%	62.11	42.11	3	66.67%	1.0	3	33.33%	1.0
Drow Ranger	13	27.08%	61.05	81.05	2	0.00%	0.7	11	54.55%	3.7
Puck	6	12.50%	60.00	48.42	4	50.00%	1.3	2	50.00%	0.7
Phantom Lancer	14	29.17%	58.95	92.63	6	33.33%	2.0	8	37.50%	2.7
Ember Spirit	5	10.42%	57.89	27.37	2	50.00%	0.7	3	66.67%	1.0
Elder Titan	18	37.50%	56.84	97.89	8	25.00%	2.7	10	40.00%	3.3
Lycan	3	6.25%	55.79	12.63	1	100.00%	0.3	2	50.00%	0.7
Morphling	10	20.83%	54.74	82.11	6	33.33%	2.0	4	50.00%	1.3
Tinker	9	18.75%	53.68	57.89	0	0.00%	0.0	9	44.44%	3.0
Sven	10	20.83%	52.63	84.21	7	28.57%	2.3	3	66.67%	1.0
Dragon Knight	5	10.42%	51.58	43.16	3	33.33%	1.0	2	100.00%	0.7
Alchemist	18	37.50%	50.53	98.95	3	0.00%	1.0	15	40.00%	5.0
Io	12	25.00%	49.47	91.58	4	0.00%	1.3	8	62.50%	2.7
Clockwerk	3	6.25%	48.42	17.89	2	50.00%	0.7	1	100.00%	0.3
Witch Doctor	5	10.42%	47.37	52.63	4	50.00%	1.3	1	0.00%	0.3
Anti-Mage	5	10.42%	46.32	38.95	1	100.00%	0.3	4	25.00%	1.3
Silencer	1	2.08%	45.26	5.26	1	100.00%	0.3	0	0.00%	0.0
Skywrath Mage	1	2.08%	45.26	5.26	1	100.00%	0.3	0	0.00%	0.0
Legion Commander	1	2.08%	45.26	5.26	1	100.00%	0.3	0	0.00%	0.0
Earthshaker	1	2.08%	45.26	5.26	1	100.00%	0.3	0	0.00%	0.0
Doom	9	18.75%	41.05	85.26	4	50.00%	1.3	5	0.00%	1.7
Rubick	4	8.33%	40.00	46.32	3	33.33%	1.0	1	100.00%	0.3
Nature's Prophet	4	8.33%	40.00	46.32	3	33.33%	1.0	1	100.00%	0.3
Crystal Maiden	2	4.17%	37.89	13.68	1	100.00%	0.3	1	0.00%	0.3
Weaver	5	10.42%	36.84	56.84	3	33.33%	1.0	2	50.00%	0.7
Queen of Pain	5	10.42%	35.79	63.16	4	25.00%	1.3	1	100.00%	0.3
Storm Spirit	6	12.50%	34.74	71.58	4	25.00%	1.3	2	50.00%	0.7
Shadow Demon	9	18.75%	33.68	90.53	3	33.33%	1.0	6	16.67%	2.0
Zeus	2	4.17%	32.63	23.16	2	50.00%	0.7	0	0.00%	0.0
Troll Warlord	2	4.17%	32.63	23.16	2	50.00%	0.7	0	0.00%	0.0
Gyrocopter	2	4.17%	32.63	23.16	2	50.00%	0.7	0	0.00%	0.0
Venomancer	2	4.17%	32.63	23.16	2	50.00%	0.7	0	0.00%	0.0
Razor	1	2.08%	28.42	9.47	0	0.00%	0.0	1	100.00%	0.3
Bristleback	1	2.08%	28.42	1.05	0	0.00%	0.0	1	100.00%	0.3
Keeper of the Light	3	6.25%	26.32	41.05	2	50.00%	0.7	1	0.00%	0.3
Lina	3	6.25%	26.32	41.05	2	50.00%	0.7	1	0.00%	0.3
Bane	3	6.25%	24.21	50.53	3	33.33%	1.0	0	0.00%	0.0
Kunkka	3	6.25%	24.21	50.53	3	33.33%	1.0	0	0.00%	0.0
Enchantress	5	10.42%	22.11	68.42	3	0.00%	1.0	2	100.00%	0.7
Sand King	4	8.33%	21.05	67.37	4	25.00%	1.3	0	0.00%	0.0
Tiny	5	10.42%	20.00	77.89	4	25.00%	1.3	1	0.00%	0.3
Clinkz	3	6.25%	18.95	28.42	0	0.00%	0.0	3	33.33%	1.0
Medusa	2	4.17%	17.89	25.26	1	0.00%	0.3	1	100.00%	0.3
Spectre	2	4.17%	17.89	25.26	1	0.00%	0.3	1	100.00%	0.3
Enigma	3	6.25%	15.79	47.37	1	0.00%	0.3	2	50.00%	0.7
Ursa	4	8.33%	14.74	75.79	3	0.00%	1.0	1	100.00%	0.3
Viper	4	8.33%	14.74	75.79	3	0.00%	1.0	1	100.00%	0.3
Night Stalker	1	2.08%	12.63	37.89	1	0.00%	0.3	0	0.00%	0.0
Spirit Breaker	1	2.08%	12.63	37.89	1	0.00%	0.3	0	0.00%	0.0
Jakiro	1	2.08%	12.63	37.89	1	0.00%	0.3	0	0.00%	0.0
Tusk	1	2.08%	12.63	37.89	1	0.00%	0.3	0	0.00%	0.0
Abaddon	2	4.17%	8.42	55.79	1	0.00%	0.3	1	0.00%	0.3
Leshrac	1	2.08%	7.37	37.89	1	0.00%	0.3	0	0.00%	0.0
Brewmaster	1	2.08%	7.37	37.89	1	0.00%	0.3	0	0.00%	0.0
Warlock	1	2.08%	7.37	37.89	1	0.00%	0.3	0	0.00%	0.0
Shadow Shaman	1	2.08%	7.37	37.89	1	0.00%	0.3	0	0.00%	0.0
Omniknight	1	2.08%	3.16	18.95	0	0.00%	0.0	1	0.00%	0.3
Chen	2	4.17%	2.11	64.21	2	0.00%	0.7	0	0.00%	0.0
Shadow Fiend	1	2.08%	1.05	37.89	1	0.00%	0.3	0	0.00%	0.0