There were bad plays in the wins as well but they get brushed aside because the team won. For example...
Arizona - tons of injuries, slow start, dicey kicking, 10 pt run in the 3rd quarter by Arizona
Utah - slow offensive start, 10 pt fourth quarter run
ASU - two bad interceptions, slow offensive start, only 6 pts in the second half
USF - rather poor last 50 minutes of the game especially on defense
USU - injuries, missed FG, really bailed out by Allgeier