I guess you feel the same way about Saban and Spurrier then. Failing in the NFL means nothing.
I think that was a different age... in today's age of social media failure is magnified.
Saban choose to leave Miami... he wasn't fired. He made the choice to go back to college. That is much different than being forced back to college after being a failure.
Spurrier failed, but he had already won a title at UF and honestly was never as good at USCe as he was at Florida. It isn't like Spurrier was pulling 5* talent.
Kelly failed in a big way.. he failed and got fired from two organizations and I personally think his brand is damaged.
The bottom line isn't that Kelly may not be better than Mac... it is that you can't fire Mac after two seasons to replace him with a guy unless that guy is a home run... I don't see Kelly as a home run.