Well, since you brought it up:
Top 10 by total number of bowl wins
Rank Team Wins
1 Alabama 31 Southern Cal
3 Penn State 26
4 Georgia 25 Texas Tennessee
7 Oklahoma 24
8 Georgia Tech 22 Nebraska
10 LSU 21
Georgia Tech and LSU (not to mention Alabama, Georgia and Tennessee) have more bowl victories (you know, those games where one usually has a decent opponent aka not Central or Northern Michigan) than any of the Penn State-less "big" 10. "Big" Bloop is nowhere to be found--as usual.
But since virtually all of the head to head games with UM against the SEC have been bowls........I might remind you of that pesky and oh so unfortunate (for your "superior league theory") 11-2 record........
:-)