just look at the shape and peak of his bicep and notice how small his wrist are, plus his waist was tiny for such a tall man, something like 29-30 inches. Small frame, maximum muscle = looking a hell of alot bigger. The illusion would have been waisted if he had 8 inch wirsts and a 32-33 inch waist the way some people his height are built frame wise. Holyfield is the same hieght and gets ripped, around the same BF% as arnold competed and still has a 32+ inch waist. Just to show how much of a freak frame wise arnold was.