I believe there is a hidden question here which might be more relevant than what the OP asked.
Which player - Cooper or Cooks - will offer the best opportunities for Cee Dee to thrive at a level where he should be in regard to his immense talent?
Now that question has a flaw in that Cee Dee was still acclimating to the NFL, and he has a different role now. But my opinion is Cee Dee will set the bar this season far above what he has done while on this team and in this league thus far.
What factors in for me is Cooks attitude. I do not have anything in the way of evidence to back up this statement, but I believe Amari Cooper paved his way out of Dallas because of his attitude. Not a TO type of boisterous buffoon, but perhaps a locker room cancer that didn't really show up in the press. I am only speculating. But in the final analysis Jerry was the one to jettison Cooper for what ever Scotch fueled nightmare Jerry concocted. And last year's results lie at the feet of Jerry Jones.
Cooks is a pro's pro, and brings a different demeanor to the table. I think he will be a real plus to the team, and a perfect Robin to Cee Dee's Batman - I despise myself for even making that analogy.