It's not like the '01 Cubs outperformed their pythagorean by 8 wins or something. They underperformed by 1 win. (And had a better pythagorean than division winning Houston) Sosa was due for some regression since his season was flat out amazing, and Mueller likely wouldn't put up a 400 OBP over a full season, but the rest of his season wouldn't theoretically be taken by Ron Coomer. Poised for greatness maybe not, but certainly a serious contender for the division.