I disagree that diet creates body shapes, nature does. No matter how much you eat of the right stuff your not going to look like frank zane if you 6ft 2 with massive bone structure. I agree that diet plays a major part in the development of the individual but does not create the individual.
E.g. 5ft 10 guy with small shoulder width and small wrists, tendons and muscle bellies
vs a 5ft 10 guy with large shoulder width and large wrist, tendons and muscle bellies.
These dimensions cannot be changed and therefore the natural progressions in size are going to be rather different even if they eat the same.