BYU has given up a total of 10 TDs and 10 FGs over the course of the 1st 6 games of the season. That's an average of 34.3 points per game for BYU and 16.3 points per game for their opponents.
The interesting thing is that in the first 5 games each team scored either only TDs or only FGs. Arizona changed that trend:
---Southern Illinois---2 TDs, 0 FGs
---SMU---0 TD, 5 FGs
---Wyoming---2 TDs, 0 FGs
---Kansas State---0 TDs, 3 FGs
---Baylor---4 TDs, 0 FGs
---Arizona---2 TDs, 2 FGs
To me this is an indication that BYU is doing a good job frequently holding opponents to FGs inside the red zone instead of letting them score TDs.