I am not trying to argue the strength of the other 8 games BYU plays but I'm pretty sure that Portland State is the only FCS team this year.
Also, simply going 8-0 against those other teams requires a certain level of talent - the type of talent that got Boise State into 3 BCS games and made them a nationally recognized program. While I expect to beat all 8 of these teams, games at East Carolina, Hawaii, USU or even UNLV (supposedly improving) may be tough and deserve some respect.