...but I would say the same thing about last year's football team. I don't think they were the 15th best team in the nation, I think they were top 25 material for sure, but 15th...nah.
Unfortunately (or fortunately depending on how you look at it), the competition BYU faces in conference play does not provide a good gauge for BYU athletics. The Cougars run the table two seasons in a row with two miracle wins over Utah to get that mark and need yet another miracle to beat a 6 seed PAC-10 team.
My gut tells me if BYU were in a BCS conference in football/basketball, they would rarely break the top 25.