Saban, Stoops, Miles, Rict, Spurrier are the top tier guys that are winning those big games more often than losing them. Most coaches are struggling to win @ 25%. 16 of those coaches have only won 1 game or less during their careers against the Top 25. That sounds crazy to me.
Not sure what Bronco's record is, but this may provide some perspective on how we should read into it.
https://twitter.com/CollegeGameDay/status/502799362431655936