I have never thought that this was that important, but I finally decided to take a look at other successful teams, starting with the Super Bowl winning Giants. Here's their D line, and I'm not seeing a lot of planetoids:
Barry Cofield | #96 | DT Height: 6-4 Weight: 306
Fred Robbins | #98 | DT Height: 6-4 Weight: 325
Osi Umenyiora | #72 | DE Height: 6-3 Weight: 261
Michael Strahan | #92 | DE Height: 6-5 Weight: 255
Justin Tuck | #91 | DE Height: 6-5 Weight: 274
Jay Alford | #93 | NT Height: 6-3 Weight: 304
So, can we stop with the "our guys are too small" stuff?