Who of course know more about it than you do. It's not a literal statement. BYU is obviously not bringing in 10 QBs this year.
Wilson may be better QB than some of, if not all, the QB's on the roster. He doesn't have a lot of experience and he was in a tough situation at Utah. As a result, he's leaving there.
Isaac is worth taking a look at and giving him the chance to compete.