re: Arkansas - what did Petrino do that no one after him can replicate

Petrino was an elite offensive mind. The game has pretty much sped up and long passed him. While he didn't always have the best talent wherever he was, his offensive scheme took advantage with matchups with substitutions, motions, personnel, and formations. I'm not sure Arkansas how long Arkansas would have given him because he never cared to get better on defense. But eventually they would wanted to go another route.