From a bodybuilding standpoint, he's obviously good, but DOES NOT have genetics as good as his father. His arms are very similar, but those high lats are a detriment. And his quads don't have the same sweep and shape. When he hits the "victory pose", he's not even anywhere close.
Sergio senior had arguably the best genetics ever to step on a bodybuilding stage. Even in the sixties, he looked like a cartoon character. Sergio Jr., while good, is not the "second coming" in my opinion.