He wasn't even that off. Just a couple of those early throws where his touch was off, and he finishes the game with a 67% completion on the day.
Other than that this was a completely normal result, absolutely no basis for any teeth gnashing. Now if you want to be unreasonable and wait for some QB to appear out of the ether, I don't even know, then go knock yourself out. But here in reality this was a perfectly acceptable, predictable result. Everybody already knows Ian Book is not Baker Mayfield, that's already fully established. So there's no need or grounds for acting like whenever he performs at a level you would about expect him to play at give or take, that it's some shocking development.
Anyone who thinks we're going to win the national championship this year is an asshole anyway. That's transparently obvious bullshit, the only reason anyone would ever say that is only so they can shit on the team when we inevitably don't. So to the haters out there, if you think you're fooling anybody you're not. This team as a whole is not much better than Ian Book as a QB. Good enough to win about 80% to 90% of our games, in fairly ho-hum fashion, and that's all. And we should be glad for that much if we get it.