Except they aren’t even remotely comparable. Riley is an actual offensive play calling savant and has been to the college playoffs 3 years in a row for a major program. He also has tailored his offense to 3 different types of QBs while doing it. Jason Garrett had no real experience calling plays and no experience leading a team on his own.
If Lincoln Riley was your run of the mill coach, this wouldn’t even be up for discussion. His scheme is legit and he would turn Prescott into a top 3 QB. If that means pulling someone like Lewis in at DC, so be it.
His offensive mind is off the charts, I saw a tweet from Chris Mortenson and he said that "virtually every team in the NFL sends guys to Norman to learn from Riley".
Think Sean McVeigh on steroids just drawing up plays nobody has ever seen run before.
But yeah, you better have a dam good DC on staff because Riley knows as much about defense as you and me. That is why OU wins games 48-42 on a fairly regular basis. He is like, "ok defense, we just need one stop this game, just one. You can give up a TD on every other drive, I just need one stop".