I was at the last BYU-USU game. 45-20, and it wasn't even that close. It was 40-24 the year before, too (and USU has won 3 of the last 5). Going further back, USU is 4-5 against BYU since 2010.
BYU has the better program all time, no doubt. But this isn't the 80s anymore, and recent records suggest that USU is better when it comes to football. At the very least, there has been parity between the programs for almost a decade.