One can't complain he isn't talented enough to handle elite defenses. But, the QB play is the reason the game was such a big blow out. Book looked great against weak defenses, but closer looks at bigger games Book always struggled at some point with throws, decision making and the tendency to choose to run to quickly rather than throw. That got exposed yesterday.
If Kizer were the QB yesterday the game is much closer. Evidence of that is the same team and game in Death Valley.