More detail:
Wazzu: 38-13, 313 total yards, a third of which came after the game was no longer in doubt in the 4th- to arguably a top 5 offense
Oregon St: 52-7, only score and a quarter of their 217 yards on the final drive of the game
Az St: 21-3, 136 total yards, only 25 through the air.
Cal: 35-0, 83 total yards.
Washington: 33-28, their only competitive game after USC, but it still wasn't really in doubt - Washington scored with a minute left
UCLA: 49-3, 269 total yards
Arizona: 35-7, 196 total yards, almost half of which and their only score coming on a meaningless final drive
Colorado: 45-15, 217 total yards
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No one in their right mind will say any of those teams are any good. Not awful, but not good - forgettably average. But with the exception of Cal these are all functioning offenses. And everyone but Washington was completely shut down. Anyone debating Oklahoma over them is a sucker for the name on the jersey.