Mathis was so freaking fast. I don't think EZ is in that same league.
I don't know who you really comp EZ too. He's obviously small, and he doesn't look that fast or explosive for a 250 lb DE either. There's a reason he didn't run the 40. But he's really bendy, he has 34" LT-sized arms, and has a lot of upper body strength for a small lineman. He just kind of spins and dips and rips off of dudes. Blockers struggle to get two hands on him and lock him up.
EZ's playstyle isn't as clean and projectable as a super fast guy running the hoop, or a Jared Verse type power rusher just bulldozing through a tackle's chest. I think that's why he slipped in the draft. But he gets home, a freaking lot.