A lot of that is due to the camera angle. The front and sides distort things a bit and anyone placed in front looks bigger than those further back in the field of view. No question, GR and Phillips are specimens, but Roche isn't small.
Oweh with a 4.36 40 at 257? Nah, that's some stopwatch magic, but he does fly. A 4.5 at the combine will still be plenty impressive.
I know they won't do it, but it would be fun seeing a 40 yard race with all three of our DE's.