This is a bad example but I appreciate you sticking to your guns. I get that if you look at the measurables, you might think this... but that's piss poor analysis.
Patterson had zero idea how to run routes out of college. He couldn't gain any separation and had zero concepts of how to beat press coverage. Patterson was an "open field/vision" guy. He lacked the ability to high point a ball consistantly. He was nothing more than a superb athlete that was going to have to learn how to run routes.
White has excellent route running abilities, a repertoire of moves to gain separation and a variety of moves to destroy press coverage. He's much stronger than Patterson is and it's evident every time he puts his hands on a defensive back. He high points the football, has good sideline awareness and was an extremely crafty WR coming out of college.
Other than that, yeah, their size and 40 times were pretty similar.