Basically the argument you're making is that BYU doesn't really do Math, Physics, Comp Sci, Chem, Engineering etc. I'm not sure that's the argument you want to make it you're trying to argue BYU has a strong graduate program.
I'm in one of those fields, I went to BYU for undergrad. But when it came time for a PhD, I was much more interested in Utah than in BYU (though ultimately I chose neither of them)