Im not saying hes not a good coach at all. Just that he has been more succesful in the last five years. Did he become a lot better coach when he turned 55? Maybe he did, I dont know. Could be I look at it this way because I dont like Nick Saban. I dont think he walks on water.
www.sports-reference.com/cfb/coaches/nick-saban-1.html
Alabama had some just okay years with Dubose, Franchione, and Shula. They are flying high now but it wont stay that way forever.