I was hoping that he would raise his game just by how experienced he is, much like Pickett did last season. However, I guess experience only matters if you actually have the talent to make it matter, and possibly even the coaching, and unfortunately Clifford just doesn't have elite talent and probably doesn't have elite coaching. It also doesn't help that PSU's scheme makes him run more than any of the running backs, and he also panics and rushes plays.Stroud was a 5* recruit, the Elite 11 winner, and the projected #1 pick in next year's NFL draft. His arm strength and accuracy far surpass Clifford at his best, so no, I don't think it's simply a matter of what teams they play for.
Compare the way Stroud fits deep balls into tiny pockets (his late go-ahead TD pass to Smith-Njigba in the Rose Bowl was NFL level) to Clifford missing open receivers deep (like in the Outback Bowl). It's not even close.