EJ had offers from all three schools u mention coming out of high school, most colleges recruited him as a tweener. Not a so called "pure DE" that u wish he was. If you're judging his play based on the notion he needs to be a "pure DE" that's where ur problem lies. HES NOT A PURE DE, he's a tweener! A versatile lineman who can play DE but is a better pass rusher from the 3 technique Defensive Tackle position and guess what a 34 DE is? Basically a DT with athletic ability, guess what EJ is? A prototypical 34 DE, do yourself a favor and google what a 3-4 DE needs to be and you won't find the words "pure DE" anywhere in the definition.
6'4" 300lbs is very different than 6'6" 270lbs! I don't see a comparison to be made between lynch and Ethan, they compliment each other very well. Lynch is a pure pass rushing defensive end who can be put anywhere along the line in PASS RUSHING downs. EJ is a do it all type of lineman who is strong at the point of attack, good to great against the run, and someone who can rush the passer well, he's led the team in sacks since he's been here...
The fact is, before lynch and tuitt got here EJ was really the only pass rushing defensive lineman we had along with two linebackers in Shembo and Fleming. Kap is great against the run but a below avg pass rusher. That meant teams would slide their protection to EJ but EJ never had a BACKUP so he was worn down throughout games. What we have now is Aaron to take reps from EJ and keep them both fresh, while also being a great pass rusher. When we go to nickel we line up EJ, Tuitt, Aaron and Darius along the line and they all compliment each other well. As Irishcalves mentioned, EJ had 3 hurries and recovered the fumble Lynch caused. So it's not like Lynch and EJ weren't on the field at different times.
The coaches are putting them both out there on pass rushing downs for a reason! They both can rush the passer, difference between them is Lynch is a pure DE, EJ is a tweener and a do it all type of lineman who is very valuable to this team right now. We do have an SEC type dline by the way and EJ, Aaron, Kap, Louis would all see significant time in the SEC if that's where they were right now.
Great topic, but I've exhausted it with this post and hopefully I've gotten my point across...