I saw that and was going to post. There is a website called college football matrix which analyzes coaching effect. Essentially, when a team wins a game against perceived better talent (determined by recruiting stats), the coach gets a +1. Opposite when they lose.
It assigned Franklin a -3 at PSU, but gave him a +7 overall, which means he was +10 at Vandy. His time at Vandy would give hime one of the highest rankings/year. I have no doubt that trend will continue in the years to come http://cfbmatrix.com/power-5-coach-effect/