Check out the link showing the records of all P5 coaches against AP top 25 teams. You will find some interesting numbers there. But, you will also find that aside from a very select few (e.g. Nick Saban, Urban Meyer, etc.), there aren't many coaches out there with winning records against top 25 teams. I would say that our coaching, the last half dozen years or more, is fairly par for the course.
http://www.wsj.com/news/interactive/COUNT0820
Note: the link may or may not have been updated with 2014 stats.
http://www.wsj.com/news/interactive/COUNT0820
Note: the link may or may not have been updated with 2014 stats.