Not all powerlifters are heavyweights or 308's.  I am entering a meet this summer in the 181 weight class, the guy who sold me my first bench shirt was a record holder at 165, and perhaps the greatest deadlifted of all time (Lamar Gant) was like a buck thirty.  Anywhere from around the 220's on down, everybody who is lifting competitive amounts of weight is pretty lean and jacked. Super heavyweights and the heaviest two or three weight classes 242's, 275's and 308's definitely have a lot of fat guys in them, tho the shape of some of those bigger guys might fool you, too. I remember seeing lots of dudes who I thought were just fat guys who ended up having visible abs whenever they peeled off their shirts. A couple of 308'ers come to mind, but they are far and away the exceptions at that size.