Ceiling? How does anyone call that as it speaks to improvement by the player? And Wentz has already found his durability floor.
There are several areas that Prescott can improve on like release time on the ball, pocket awareness and protecting the ball inside the pocket. The accuracy issue is the big question but what's fixable about that is the fact he's inconsistent. It's not as if he's inaccurate because we seen him drop dimes but that inconsistency shows up with what should be a simple pass for NFL QB's.
Given the choice so far, it's no choice, Dak wins on durability alone. Until Wentz can play the entire season, can't make a fair comparison but when it comes to being valuable to his team, the old Woody Allen rule applies, 80% of it is just showing up.
Between the two teams extending their QB's, I'd be very apprehensive if I were the Eagles. Wentz hasn't proven he can show up.