Ok, then let's dumb this down a little bit so that even you can understand how irrelevant Utah State is in this "rivalry".
Even in Utah State's best years in decades, they have only beaten BYU twice. Once when BYU was in a rebuilding year and had the worst defensive situation ( Jaime Hill) and quarterback situation (QB2: Riley Nelson/Jake Heaps fiasco) in one year they have ever had. The other time they beat BYU was in a game that was competitive on both sides until BYU's offense is demoralized by the loss of their best player and quarterback.
Simply put, Utah State does not in any way regularly beat BYU in football. The statistics prove this. Seriously, 2 wins since 2000 and Aggies are all chest thumping. It's ridiculous.