Both are talented, to me the deciding factor is who over the course of their careers have been the most clutch in key games and the post season. Its for damn sure hasn't been Roddy White
Right now I would take Cruz over White in a heartbeat. He is 5 years younger, has proven he can get it done in the postseason, just now starting to enter his prime, and still has room to improve, while White is pretty much at the height of his career.
And lastly Roddy's comment about the big boys playing on the outside is one of the dumbest thing I ever heard. Playing the slot means going across the middle of the defense and splitting the safeties and MLB a lot more than WRs playing out.