I have been watching this show from the first season. It is kind of funny that in the begining, Christian was the hot one. Back then, he had a nice little build, and it was hard to argue.
Each season since, you can tell that Dylan is the one that goes to the gym every week. Whenever he has his clothes off, his is pretty nice built, he has great arms.
Julian, on the other hand, has continued to lose his build over the years, there is not much left to him.
I picture Julian being a little above average. Dylan I picture more of an average guy with a nice big pair.