Black guys and nordic guys tend to put on mass easier then others, primarily asians(from what i've seen). I've only seen a handful of asians who were anywhere near my size (and were definitly clean). I could be wrong, but my chinese buddy can bench 40 more pounds then me (315) , and he was in horrible, horrible shape. He shot test weekly, and drank a six pack every night, while I drank nearly a liter a night. He was stronger in that ONE lift then me, but evrything else including appearance was less.
My genetics were pretty fortunate to me, and i ahve no idea how i got big while I drank. Probably just that nordic dutch/polish viking blood fighting through, haha. However i know black dudes who DO NOT juice, drink tons of beer, eat like shit, and are still big and not fat.