As you look through history at the great defenses in both college and pro football, most of them had a ball-control style offense that eats up clock and keeps the opposing offense off the field.
Towards the end of the Doman era, he had fallen back into running a ball-control style offense (at Bronco's request). Additionally, Bronco's efforts in recruiting, player development and talent allocation skewed towards the defense. This meant we had some numerically impressive defenses (and lost a lot of games).
There's no such thing as a "great" defense when you're running a hurry-up offense. Not one documented example. Your defense gets gassed and the opposing offense is just on the field for too much time. Additionally, Bronco spent most his time developing offensive players this year, thinking the defense was buttoned up (it wasn't).
A program like ours has a few great talents and a few good coaches. Resource allocation of strategic decisions in one area mean another area will suffer.
Now, it is possible we could run a lower speed offense that still scores lots of points. That's closer to Anae 1.0, and might actually be a better fit for the Cougars. I don't think "Go Fast, Go Hard" has proven to be a competitive differentiator.