Can I say that BYU is for real but that I don't expect a 23-pt win?
Having attended each of BYU's games so far this season, I can tell you that they have all gone about the same way. BYU has controlled each game, despite an opponent push (or BYU lull) in the 3rd/4th quarter. BYU hasn't trailed at any point in the first 3 games. That being said, BYU has scored 27, 26, and 24 points over those 3 games so I have a hard time believing in a 23.5-point line.
BYU's defense is the best it has been in several years (we did lose our defensive captain and leading tackler). BYU's offense has not been as explosive this season as it was last season, but Hall is only on his 5th start and as our coaches have pointed out, none of the defenses BYU played last year were in the same league as what ASU and Utah put on the field. AZ with a new staff and new roster was just a complete unknown to start the year.
So, in my opinion, BYU is good and will get better. They haven't played their best football yet. I think BYU will win, but USF likely will cover the spread.