I'm not knocking Kelsay at all but I do think they might be different a little as far as whether they are viewed as run stoppers or passrushers.
Roth definitely compares to Trace Armstrong...in so many ways. Trace was a competitor, I just wish that Roth funnels his emotion in the same ways that Trace did, and not in the ways that Bryan Cox did. All the people that get on here and say that they won't mind a few penalties as long as Roth brings high energy and whatnot, I think they don't realize how angry they will be at Roth the first (or fifth) time he gets a stupid roughing the passer penalty on a critical third down in an important game.
I remember seeing once during a Phins game where Trace was playing...we were losing the game, game was basically lost...the other offense is kneeling on the ball to run the clock, we're down by one score, and there is Trace Armstrong, lining up at nose tackle right down the center's neck, poising one hand for a swipe every time the center goes to snap the ball, and trying to swat the ball every time the center snaps it. I know it was a futile effort but that's the kind of player I hope Roth ends up for us.