Both teams had shaky starts and neither came close to covering in week 1. Both improved dramatically in week 2.
Here is why the line is off; USC WILL be able to run the ball and hit the short pass ALL day. They could easily have 5 or 6 80 yard drives.
Texas will not be able to pound the ball and will have to rely on frosh qb playing in his 2nd game. He is a stud but not ready for prime time. He could use a couple of more San Jose St's.
USC will win the TO edge. Their offense is experienced and defense has a very good non-blitz pass rush.
USC gradually wears down a Texas defense of very average talent and puts up at least 45 points. Texas gets about 20. Books had this line at USC -10 back in June and that wasn't near enough and neither is -15.5.