regardless of what he used, he looks good. it doesnt detract too much from his physique, of which the rest is cut and separated (look at those legs)
yes arms and shoulders dont look too good as far as detail. its not as aesthetically pleasing as it could be. but one shouldnt be marked down overall, because of a few errord in proportion or detail in one particular spot.
They look nothing alike there. Klaus looks awesome. Nasser looks like shit. Hope this helps.