That's really not true.. an ideal 3-4 DE is a 5 technique guy who is at least 6'4" 290 lbs. Only Alfonso Boone sort of meets some of that criteria, and while I actually kind of like Boone, he's 33 years old and on the tail end of his career.
Steelers DEs? 6'5" 298 and 6'5" 285.
Patriots DEs? 6'5" 300 and 6'6" 310.
Dolphins DEs? 6'6" 294 and 6'4" 290.
Hali - 6'3" 275.
McBride - 6'2" 278
Dorsey - 6'1" 297