Yes, other teams that will make the playoffs have had bad losses...but that does not make BYU's losses any better.
The way that BYU lost to Kansas may have been a fluke...but if they can't fix it in back to back games at this point in the season....then they should not expect the playoff committee to reward them for beating good teams earlier in the season.
With that said....even if they lose to ASU, it has still be a great year for BYU Football. Beating the Utes this year may end up strengthening the program for years to come.