...and the idea that 60M or 80M somehow mimics MLB more closely is a fantasy.
A team that wins 5 of 9 is a 90 game winner. A team that loses 5 of 9 is a 90 game loser. Following is the percentage of teams falling within 4-5 (.4444) and 5-4 (.5556).
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pct teams
AL&NL History 48.3% 2484
AL&NL since 1995 55.6% 504
ATG 200M 65.0% 7308
ATG 140M 67.9% 3948
ATG 100M 71.2% 22416
ATG 80M 72.7% 21840
ATG 60M 75.1% 1872
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Essentially half of the rest are above 90 wins (.5556) and the other half are below.
Only 12.5% of teams in 60M leagues are over 90 wins. Since 1995, 21.6% of MLB teams are over 90 wins.
Also, I used the Lahman database that only goes through 2010 for AL & NL History. AL & NL since 1995 includes 2011. The rest of the data is from Diamond Dope actuals.