Arizona is a good team. Better then USC. I wouldn't count them out. They also have to play the Beavers. That's an upset in the making. Considering there's no team in the Pac 10, outside of Arizona, that has a defense. Oregon is beatable.
If we end up with Oregon undefeated going up against Utah/TCU/Boise, then we will have our first national champion from a non-BCS conference. Oregon isn't as good as they were last year and you saw what OSU did to them. In reality, Oregon is comparable to Miss State. They'd be a mid level SEC team with their weak defense.