I beleive the guy is natural.I have seen African American athletes like this guy, look amazing without any anabolics.Alot of African American bodybuilders have really small joints, round muscle bellies, and very fibrous muscle.I have seen guys like this one, who only weighed 200lbs, and look like they weighed 240lbs.If you measured his arm I bet it would be much bigger then 18 1/2" but its looks closer to 20".This is were genetics come in to play.Bodybuilding is all an illusion.Just look at David Henry, he weighs only 202lbs, but looks like he 225 lbs on stage.He gave Toney a Freeman in a pro show not to long ago.How many people do you know look as dense, as hard, or as big as David Henry does, at 202lbs.
The bottom line is this guy is probably natural, he just has really really good genetics.