That's true. Let's look at the travel considerations.
Big East opponents in order of travel distance (roughly):
Providence
St. John's
Seton Hall
Nova
Georgetown
Xavier
Butler
DePaul
Marquette
Creighton
Big XII opponents in order of travel distance (roughly):
WVU
Cincy
UCF
ISU
KU
KSU
OSU
Houston
Baylor
TCU
TTU
BYU
Cincy and Xavier are a wash. WVU and Georgetown are basically a wash by plane. Creighton and Kansas are a wash. UCF is about as far as Milwaukee or Chicago. ISU isn't much farther.
So you're basically swapping: Providence, St. John's, Seton Hall, Nova, Butler for KSU, OSU, Houston, Baylor, TCU, TTU, and BYU. And you're not going to play every Big XII team on the road every year, so probably an additional 5 longer trips per year. That's not a huge lift.
What killed us in the AAC wasn't the travel, it was the team, fans, recruits not getting up for the likes of ECU and Tulane and our coach checking out mentally. The former isn't going to be a problem when we have Kansas, Houston, and Baylor on the schedule, and the latter, well, that's not going to be a problem either.