College Gameday made a fine decision. It would've been just fine either way, if we're looking at it objectively: Celebrating Temple being really good, which is a great story on its own, in front of Independence Hall is aproducer's dream. Celebrating Washington State being good enough for Gameday in Pullman is also a producer's dream.
I'll take ESPN at its word and assume this was a difficult decision between two very deserving fanbases. Producing three hours of live television on the road every week is not an easy thing to do. From advance scouting and logistics, to wrangling talent and actually producing a show is a big undertaking.