Wentz's experience in a pro-style offense, under center and reading D's is helpful, but from what I have heard, Goff worked a ton on taking the ball from under center and looked good doing it in workouts.
Listening to a lot of Goff/Wentz analysis on podcasts in the past few days, I am starting to get a little bit of cold feet with Wentz. It seems like they have similar ceilings but Goff is like twice as likely to make it there (which goes along with what Bob, or someone, posted last week with the bust likelihood from FO or PFF, or somewhere).