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): 6 - Median hero bans (mb): 7 - Matches: 67

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

Balance rank	Winrate	Pickrate	Contest Rate
44.3	52.3	38.5	31.7

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Mirana	63	94.03%	100.00	65.48	49	67.35%	8.2	14	57.14%	2.0
Shadow Fiend	38	56.72%	98.81	54.76	18	77.78%	3.0	20	45.00%	2.9
Treant Protector	56	83.58%	97.62	75.00	30	56.67%	5.0	26	65.38%	3.7
Wraith King	30	44.78%	96.43	44.05	19	73.68%	3.2	11	36.36%	1.6
Enchantress	25	37.31%	95.24	41.67	18	66.67%	3.0	7	57.14%	1.0
Shadow Demon	55	82.09%	94.05	83.33	40	52.50%	6.7	15	60.00%	2.1
Morphling	34	50.75%	92.86	63.10	14	57.14%	2.3	20	65.00%	2.9
Keeper of the Light	29	43.28%	91.67	55.95	16	75.00%	2.7	13	30.77%	1.9
Lycan	60	89.55%	90.48	91.67	6	50.00%	1.0	54	51.85%	7.7
Dark Seer	51	76.12%	89.29	82.14	29	58.62%	4.8	22	40.91%	3.1
Dragon Knight	30	44.78%	88.10	59.52	13	69.23%	2.2	17	47.06%	2.4
Luna	28	41.79%	86.90	57.14	12	58.33%	2.0	16	62.50%	2.3
Nyx Assassin	28	41.79%	85.71	67.86	18	55.56%	3.0	10	60.00%	1.4
Tidehunter	27	40.30%	84.52	66.67	14	64.29%	2.3	13	38.46%	1.9
Brewmaster	33	49.25%	83.33	76.19	17	52.94%	2.8	16	50.00%	2.3
Sand King	56	83.58%	82.14	97.62	20	40.00%	3.3	36	50.00%	5.1
Clockwerk	17	25.37%	80.95	39.29	11	63.64%	1.8	6	50.00%	0.9
Templar Assassin	33	49.25%	79.76	78.57	15	46.67%	2.5	18	55.56%	2.6
Witch Doctor	13	19.40%	78.57	34.52	11	63.64%	1.8	2	50.00%	0.3
Disruptor	33	49.25%	77.38	80.95	19	47.37%	3.2	14	50.00%	2.0
Invoker	45	67.16%	76.19	95.24	12	16.67%	2.0	33	63.64%	4.7
Nature's Prophet	14	20.90%	75.00	36.90	9	55.56%	1.5	5	80.00%	0.7
Naga Siren	38	56.72%	73.81	90.48	8	50.00%	1.3	30	43.33%	4.3
Io	34	50.75%	72.62	84.52	9	33.33%	1.5	25	56.00%	3.6
Puck	21	31.34%	71.43	70.24	14	50.00%	2.3	7	57.14%	1.0
Batrider	67	100.00%	70.24	100.00	11	36.36%	1.8	56	37.50%	8.0
Centaur Warrunner	31	46.27%	69.05	85.71	20	35.00%	3.3	11	81.82%	1.6
Dazzle	20	29.85%	67.86	64.29	9	55.56%	1.5	11	45.45%	1.6
Shadow Shaman	20	29.85%	66.67	71.43	16	56.25%	2.7	4	0.00%	0.6
Ursa	10	14.93%	65.48	30.95	6	50.00%	1.0	4	100.00%	0.6
Doom	9	13.43%	64.29	29.76	7	57.14%	1.2	2	100.00%	0.3
Kunkka	16	23.88%	63.10	58.33	9	66.67%	1.5	7	14.29%	1.0
Weaver	16	23.88%	61.90	61.90	8	37.50%	1.3	8	75.00%	1.1
Viper	16	23.88%	60.71	60.71	6	50.00%	1.0	10	50.00%	1.4
Bane	18	26.87%	59.52	72.62	8	50.00%	1.3	10	40.00%	1.4
Timbersaw	9	13.43%	58.33	33.33	7	57.14%	1.2	2	50.00%	0.3
Storm Spirit	24	35.82%	57.14	86.90	11	45.45%	1.8	13	30.77%	1.9
Visage	6	8.96%	55.95	10.71	4	50.00%	0.7	2	100.00%	0.3
Ancient Apparition	19	28.36%	54.76	88.10	9	22.22%	1.5	10	60.00%	1.4
Axe	6	8.96%	53.57	28.57	3	33.33%	0.5	3	100.00%	0.4
Rubick	13	19.40%	52.38	79.76	8	25.00%	1.3	5	60.00%	0.7
Slardar	8	11.94%	51.19	52.38	4	50.00%	0.7	4	25.00%	0.6
Death Prophet	7	10.45%	50.00	35.71	2	50.00%	0.3	5	40.00%	0.7
Meepo	8	11.94%	48.81	42.86	2	0.00%	0.3	6	66.67%	0.9
Phantom Lancer	1	1.49%	47.62	3.57	1	100.00%	0.2	0	0.00%	0.0
Night Stalker	1	1.49%	47.62	3.57	1	100.00%	0.2	0	0.00%	0.0
Elder Titan	9	13.43%	45.24	77.38	5	20.00%	0.8	4	50.00%	0.6
Tiny	14	20.90%	44.05	98.81	9	22.22%	1.5	5	20.00%	0.7
Slark	6	8.96%	42.86	53.57	3	33.33%	0.5	3	33.33%	0.4
Spectre	2	2.99%	41.67	9.52	2	50.00%	0.3	0	0.00%	0.0
Lina	2	2.99%	41.67	9.52	2	50.00%	0.3	0	0.00%	0.0
Razor	2	2.99%	41.67	9.52	2	50.00%	0.3	0	0.00%	0.0
Anti-Mage	1	1.49%	38.10	1.19	0	0.00%	0.0	1	100.00%	0.1
Tinker	3	4.48%	36.90	27.38	2	50.00%	0.3	1	0.00%	0.1
Magnus	3	4.48%	36.90	27.38	2	50.00%	0.3	1	0.00%	0.1
Lion	3	4.48%	34.52	32.14	3	33.33%	0.5	0	0.00%	0.0
Queen of Pain	4	5.97%	33.33	40.48	3	33.33%	0.5	1	0.00%	0.1
Outworld Destroyer	8	11.94%	32.14	73.81	1	0.00%	0.2	7	28.57%	1.0
Chen	5	7.46%	30.95	69.05	4	25.00%	0.7	1	0.00%	0.1
Ember Spirit	6	8.96%	29.76	89.29	4	0.00%	0.7	2	50.00%	0.3
Lifestealer	7	10.45%	28.57	96.43	4	0.00%	0.7	3	33.33%	0.4
Vengeful Spirit	2	2.99%	27.38	51.19	2	0.00%	0.3	0	0.00%	0.0
Troll Warlord	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Gyrocopter	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Alchemist	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Silencer	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Pugna	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Phantom Assassin	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Lone Druid	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Sniper	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Riki	1	1.49%	26.19	25.00	1	0.00%	0.2	0	0.00%	0.0
Ogre Magi	1	1.49%	15.48	5.95	0	0.00%	0.0	1	0.00%	0.1
Enigma	1	1.49%	14.29	25.00	1	0.00%	0.2	0	0.00%	0.0
Venomancer	5	7.46%	13.10	94.05	3	0.00%	0.5	2	0.00%	0.3
Drow Ranger	1	1.49%	11.90	25.00	1	0.00%	0.2	0	0.00%	0.0
Lich	5	7.46%	10.71	94.05	3	0.00%	0.5	2	0.00%	0.3
Abaddon	1	1.49%	9.52	25.00	1	0.00%	0.2	0	0.00%	0.0
Jakiro	2	2.99%	8.33	51.19	2	0.00%	0.3	0	0.00%	0.0
Bounty Hunter	2	2.99%	8.33	51.19	2	0.00%	0.3	0	0.00%	0.0
Crystal Maiden	2	2.99%	8.33	51.19	2	0.00%	0.3	0	0.00%	0.0
Huskar	2	2.99%	8.33	51.19	2	0.00%	0.3	0	0.00%	0.0
Clinkz	2	2.99%	3.57	38.10	1	0.00%	0.2	1	0.00%	0.1
Tusk	2	2.99%	2.38	51.19	2	0.00%	0.3	0	0.00%	0.0
Undying	1	1.49%	1.19	5.95	0	0.00%	0.0	1	0.00%	0.1