I don't know...I've never hit the sauce, yet there have been times where I have gotten that red after working out AND running...just not in my face like that. The only time I did get that red was when I was alabaster white from lack of sun though. The face being that red is what makes it very suspect to me although I still wonder if maybe I'm trying to hold out hope and say "well, it may be a sun burn". When I was 17-18 I was leaner and more muscular than that (only by about 15lbs @ 5'10) but I didn't have that kind of vascularity.
Could he be natural? Yup, and if so he's doing damn good. If he's on the juice though...jesus....whoeve r talked him in to it and the kid taking it need the hell slapped out of them.
edit: Oh, and teens have acne. Everywhere. Hell, I still get shoulder/back pimples every now and again and I'm 24.