UCLA/Oregon just isn't comparable in national perception right now given their recent losses. If CU wasn't a cellar dweller and it affected our hopes of a CCG game, it'd be different. Pac12 has hurt itself being invisible to nearly everyone east of Denver in 9/10 games due to Network and time.
This. You have 2 top-5 teams playing in Auburn-MSU and a top 10 Big 12 matchup going on, so I'd be surprised if anyone who really likes college football would opt for Oregon-UCLA over those 2 games except for the fans of those 2 schools.