But the big 10 gets worked by the southern schools almost every bowl season. The big 10 has had only one bowl season above .500 winning % since 2003 and that was because of OSU's run in 2014.
You're right that the big 10 is getting better but the best sun belt
players, for the most part, will always go to USC, Texas, FSU, Bama, etc.
We rarely see a big 10 team blow out a big time good weather school. But we see big 10 teams constantly getting clowned by PAC, SEC, or ACC schools.
Just look at some recent bowl games in which Stanford wiped Iowa, Tennessee punked Northwestern, Bama embarrassed MSU twice, and Florida over Iowa. Even in a tough battle FSU prevailed over Michigan.