Well, you said it. Chow's offense is more vertically-oriented pro offense than that of Knapp. I noticed the Trojans using a mobile pocket for much of the night, which I think helped neutralize the Sooner's pass rush.
You would probably see the Falcons under Norm Chow lining up Dunn at WR which we saw some of under Reeves, but I don't recall it being used with Knapp.
I'm not ready to throw Knapp under the bus just yet, but I do agree some improvement is needed. But I will give him the benefit of the doubt, and say that this was his first year. If by the end of his second year, we don't see some diversity and innovation in his offense, then we can start calling for his head. But I think a very limiting factor for Knapp was how this offense was foreign to most of his offensive players.
The knock on Chow is that he has no NFL coaching experience, but that was the same knock on Scott Linehan (Vikes OC), who is one of the hottest coaching prospects in the league right now, and will likely have a head coaching job by next fall if not this one.
"Vincere scis, Hannibal, victoria uti nescis" -- Maharbal, 216 B.C.E.