Oregon served notice that it could have the most defensive talent in the Pac-12 holding Stanford to 14 points last week. 
Washington State isn't the up-tempo, throw at will team it was under Mike Leach. The Cougars run far more and play at a slower pace. This is a different type of Cougars team and I expect them to have trouble against Oregon's defense. 
The weather forecast is for heavy winds, too.