It sound to me that that prick has no self asteem, anybody that has to compare themselves to someone else is pretty shallow and thinks little of himself.

I would just ignore him, that will piss him off the most knowing that what he says has no effect on you!

then train your ass off and get bigger and meaner and stronger
and in a years time bump into him and say to him"remember me you little s##t!, your not so tough now, and pull his heart out of his chest!"

Sorry I had to get that off my chest?

I have little patients for a$$ holes like that!

best thing is to just ignore him, you don't need a confrontation with him, your there to train, your not there to become what you
detest.