Spurrier IMHO was way ahead of everyone when he put his mind to it.
As a game day coach, he was without parallel, and it seemed obvious.
Saban is a massively successful coach, but I don't often watch his teams play and think "Wow, Saban really outcoached the other guy" that often."
I still don't know if Smart is average or better than average aside from recruiting. He did nearly win the NC, but he gets a ton of talent (which is part of it).