... of being LESS desired by the networks when not playing the bigger brands and thus having a smaller denominator for the equation. Being relegated to Pac12N and thus excluded from average viewership figures shouldn't be a plus. This also relatively OVER-weights their highest viewed games.
This is why Army/Navy always WAY over-perform on these Avg viewership lists; since neither are on rated channels much, they get a very high average viewership per game on a rated channel almost solely due to the HUGE viewership from the annual Army/Navy game.
Just because networks like FS1 and ESPN WANT to select the BYU games (often in less desirable late time slots) makes their denominator much larger, and dilutes the average viewership number.