He didn’t mention he wasn’t big enough to defend the run. His point was that Brown and Burns and even YGM are guys with physical tools to be able to turn into pro-bowlers. No guarantee but they have that upside. Weatherly may have size, he doesn’t have the upside. Wes Horton had enough size to defend the run and had some success to get sacks but in the end he didn’t have the physical tools to be a stud DE.