The increase in muscle size is pretty obvious. And if he's fat and loses weight, of course his face will get thinner, even on gear.
In the after picture, he is standing closer to the mirror. That's all you are seeing.
You seem to think that no one can get in great shape without drugs. But once upon a time, in an another era, not that far far away back in time, there were no drugs to use, and people still got in shape, got stronger, got bigger, and sure got better looking bodies, than what passes for bodybuilders today. And, you know what? It can be done today too. Just by doing what bodybuilders did, before there were any drugs to use.