Norm Chow is as qualified as Kiffin IMO.
Norm Chow won an NC at USC as an Offensive Coodinator and left, leaving the door open for Kiffin to become Offensive Coordinator. Kiffin then left after 2 years to be head coach of the Raiders. A lot of coordinators would have looked good coaching that USC team that Chow left. Other then that stint as OC at USC, Kiffin hasn't accomplished much. Even Randy Sanders looked pretty good for 2 years after Cutcliffe left in 98.