Ok, I'm not going to argue about it, since there's no way for either side to prove it's right. But even if he's on all gear known to man, his results are impressive. For me being on doesn't make great achievements any less great. Lots of people are on and they don't have the looks nor the strength you'd expect (know some from my gym).
I've not met many I could say had great genetics, but those I've been privileged to meet, I've been surprised by how little gear they actually take..
Genetics kick arse..!!