UCLA is getting better. The Bruins are 2-1-1 ATS in their last four games, including SU road victories against Washington State and Stanford. The Bruins have improved their defense, allowing 366 yards per game during their last three games, and getting better QB play. Star running back Joshua Kelley is healthy again, too.
Arizona State has been getting worse. The Sun Devils are coming off a lackluster 21-3 loss to Utah. 
UCLA has played a tougher schedule than Arizona State. The Sun Devils' early season win against Michigan State doesn't look so impressive now given the Spartans' woes. 
This has been an extremely tight series. The Sun Devils nipped UCLA, 31-28, last year. The Bruins are better than they were last season. I see them getting revenge at home.