I'll agree that there is a bit more in the NFL but college is catching up. And quick. What they don't publicize in the deals are the quiet "hey, here's a mansion on the lake, a car or three and country club memberships" that total in the millions. And there is more control for a college head coach than in the pro's, which is a big ego stroke for these A type personalities.
And an arse is an arse is an arse and if they are wealthier than you and I, they want it kissed.
I would say that while the NFL is the darling of coaching jobs, college is right next to them and again, catching up very quickly.