I’d have to go back and look but off the top of my head I remember him beating quite a few p5’s over his tenure although .500 or better is probably not a huge number. I can think of Oregon, UCLA a couple of times, Georgia tech,
Texas, AZ, and there were probably some other. Wasn’t CAL over .500 when he beat them?
And the list of non .500 P5’s is a pretty decent one.
Bronco had a good run as BYU’s coach.