Oregon ran the ball at exactly a 2:1 ratio outside of garbage time, and even that was probably too much passing. Considering the poor weather and the fact that UW does exactly one thing well which is defend the pass, Oregon probably should have kept the ball on the ground at more like a 3:1 or even 4:1 ratio. It seems like the Ducks figured that out by halftime - outside of garbage time, Oregon had a 50/50 run-pass split in the first half, but in the second half it was over 85% rushing.
This was the fourth straight week of Oregon rushing at a 75% or better success rate, which is unprecedented in my experience - 30 successful designed runs vs just 10 unsuccessful ones, given the down & distance.