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): 13 - Median hero bans (mb): 16 - Matches: 154

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

Balance rank	Winrate	Pickrate	Contest Rate
57.2	82.2	33.3	30.0

Hero	Matches	Contest Rate	Rank	Rev-Rank	Picked	Winrate	mp	Banned	Winrate	mb
Rubick	153	99.35%	100.00	73.63	80	62.50%	6.2	73	45.21%	4.6
Lycan	152	98.70%	98.75	74.61	17	58.82%	1.3	135	55.56%	8.4
Dark Seer	153	99.35%	95.44	78.03	39	61.54%	3.0	114	50.00%	7.1
Leshrac	149	96.75%	95.02	77.37	91	54.95%	7.0	58	53.45%	3.6
Templar Assassin	41	26.62%	88.43	38.71	21	66.67%	1.6	20	65.00%	1.3
Chen	148	96.10%	86.92	84.97	66	48.48%	5.1	82	53.66%	5.1
Tidehunter	129	83.77%	85.51	80.70	77	53.25%	5.9	52	46.15%	3.3
Venomancer	126	81.82%	85.43	79.95	84	50.00%	6.5	42	57.14%	2.6
Morphling	124	80.52%	85.38	79.29	78	56.41%	6.0	46	36.96%	2.9
Anti-Mage	56	36.36%	85.19	52.04	32	59.38%	2.5	24	62.50%	1.5
Enchantress	121	78.57%	81.96	81.46	51	45.10%	3.9	70	57.14%	4.4
Invoker	142	92.21%	81.16	89.03	81	46.91%	6.2	61	50.82%	3.8
Lone Druid	102	66.23%	79.82	77.46	60	48.33%	4.6	42	57.14%	2.6
Bounty Hunter	54	35.06%	79.03	56.39	30	60.00%	2.3	24	50.00%	1.5
Chaos Knight	63	40.91%	77.82	62.81	36	52.78%	2.8	27	59.26%	1.7
Shadow Shaman	63	40.91%	74.95	66.48	47	55.32%	3.6	16	37.50%	1.0
Nature's Prophet	147	95.45%	74.22	97.72	55	43.64%	4.2	92	44.57%	5.8
Naga Siren	152	98.70%	73.48	100.00	19	36.84%	1.5	133	45.11%	8.3
Enigma	87	56.49%	71.80	79.59	45	44.44%	3.5	42	54.76%	2.6
Brewmaster	77	50.00%	71.54	75.14	33	51.52%	2.5	44	45.45%	2.8
Io	29	18.83%	71.51	41.14	14	57.14%	1.1	15	66.67%	0.9
Puck	13	8.44%	70.85	16.54	9	77.78%	0.7	4	50.00%	0.3
Broodmother	108	70.13%	68.36	90.46	29	34.48%	2.2	79	50.63%	4.9
Windranger	62	40.26%	64.91	75.97	45	46.67%	3.5	17	47.06%	1.1
Tinker	87	56.49%	62.76	87.90	23	34.78%	1.8	64	48.44%	4.0
Sand King	69	44.81%	62.74	81.89	50	48.00%	3.8	19	26.32%	1.2
Beastmaster	57	37.01%	61.28	76.28	35	51.43%	2.7	22	27.27%	1.4
Queen of Pain	54	35.06%	59.91	76.82	42	42.86%	3.2	12	58.33%	0.8
Crystal Maiden	17	11.04%	58.38	38.35	16	56.25%	1.2	1	100.00%	0.1
Storm Spirit	36	23.38%	58.23	63.61	24	50.00%	1.8	12	41.67%	0.8
Tiny	18	11.69%	56.61	40.14	14	57.14%	1.1	4	50.00%	0.3
Clinkz	8	5.19%	54.40	12.43	6	66.67%	0.5	2	100.00%	0.1
Keeper of the Light	15	9.74%	49.55	40.57	13	53.85%	1.0	2	50.00%	0.1
Night Stalker	27	17.53%	48.86	62.02	17	41.18%	1.3	10	60.00%	0.6
Shadow Demon	54	35.06%	48.30	88.07	31	32.26%	2.4	23	52.17%	1.4
Earthshaker	15	9.74%	44.98	39.90	8	62.50%	0.6	7	28.57%	0.4
Pudge	23	14.94%	40.66	59.22	7	57.14%	0.5	16	31.25%	1.0
Dragon Knight	11	7.14%	37.99	38.04	9	44.44%	0.7	2	100.00%	0.1
Ancient Apparition	13	8.44%	36.77	47.09	11	45.45%	0.8	2	50.00%	0.1
Dazzle	5	3.25%	34.75	6.88	2	50.00%	0.2	3	100.00%	0.2
Lina	14	9.09%	29.72	58.83	12	41.67%	0.9	2	0.00%	0.1
Riki	2	1.30%	29.18	0.00	1	100.00%	0.1	1	100.00%	0.1
Luna	11	7.14%	28.64	46.74	8	50.00%	0.6	3	0.00%	0.2
Vengeful Spirit	12	7.79%	28.26	54.39	11	36.36%	0.8	1	100.00%	0.1
Kunkka	7	4.55%	24.97	25.01	3	33.33%	0.2	4	75.00%	0.3
Juggernaut	10	6.49%	21.75	48.41	6	33.33%	0.5	4	50.00%	0.3
Batrider	7	4.55%	20.40	35.55	5	40.00%	0.4	2	50.00%	0.1
Disruptor	11	7.14%	18.46	60.36	8	37.50%	0.6	3	0.00%	0.2
Pugna	3	1.95%	17.90	8.54	2	50.00%	0.2	1	100.00%	0.1
Lion	1	0.65%	17.71	0.00	1	100.00%	0.1	0	0.00%	0.0
Faceless Void	1	0.65%	17.71	0.00	1	100.00%	0.1	0	0.00%	0.0
Bane	1	0.65%	17.71	0.00	1	100.00%	0.1	0	0.00%	0.0
Mirana	5	3.25%	15.79	31.56	5	40.00%	0.4	0	0.00%	0.0
Lich	9	5.84%	14.91	58.82	8	25.00%	0.6	1	100.00%	0.1
Visage	4	2.60%	13.32	22.22	3	33.33%	0.2	1	100.00%	0.1
Axe	2	1.30%	13.26	3.56	1	100.00%	0.1	1	0.00%	0.1
Phantom Assassin	3	1.95%	8.51	17.96	2	50.00%	0.2	1	0.00%	0.1
Shadow Fiend	2	1.30%	3.55	13.30	1	0.00%	0.1	1	100.00%	0.1
Death Prophet	4	2.60%	1.82	46.19	3	0.00%	0.2	1	100.00%	0.1
Outworld Destroyer	2	1.30%	0.00	36.66	2	0.00%	0.2	0	0.00%	0.0
Slardar	2	1.30%	0.00	36.66	2	0.00%	0.2	0	0.00%	0.0
Spirit Breaker	1	0.65%	0.00	17.77	1	0.00%	0.1	0	0.00%	0.0
Alchemist	1	0.65%	0.00	17.77	1	0.00%	0.1	0	0.00%	0.0
Witch Doctor	1	0.65%	0.00	17.77	1	0.00%	0.1	0	0.00%	0.0
Nyx Assassin	1	0.65%	0.00	17.77	1	0.00%	0.1	0	0.00%	0.0
Weaver	3	1.95%	0.00	53.23	3	0.00%	0.2	0	0.00%	0.0