I don't see Wilber (6-4, 250) being able to do anything that Ware (6-4, 254) can't do.
It's more about Ware not being able to do the things that Wilber can because, regardless of how similar their measurables may be, they are two different types of athletes. Ware doesn't have the lateral quickness or mobility anymore to cover anyone. Therefor, as I stated before, the defense can counter this formation very easily.
You don't take your best pass rusher (make no mistake, as down a year as he had last year he is still our best rush end) and line him up dramatically out of position. A much better option is simply blitzing the player already like up at SLB while keeping Ware as a rush end on the other side. As I stated before, this gives the defense symmetry and doesn't allow the QB to simply roll away from an obvious overload/blitz situation.