Please, explain this picture then.
Again it's the photo. Look at it closely. Branch is slightly in front of the camera and Mustafa is slightly further back so that he looks taller and Branch looks shorter. Additionally Branch's head is bent down which ads to this effect not to mention that Branch has obviously not fully executed his lat spread and Mustafa nailed it for that shot. On a side note Branch's back is not one of his strong points and if both Branch and Mustafa both executed the shot perfectly for that picture Mustafa would easily own Branch on width, thickness though not conditioning, i.e. Branches hamstrings are more clearly separated and he has gluteal striations while Mustafa's muscularity is good his glutes are smooth and has less hamstring detail.
Hope this helps.
