it's good to go with guys better than you so you learn, and perhaps heavier, bigger and stronger is ok too as long as there's the mutual agreement beforehand. i hear of these stories and just think what a prick. the guys that run the gym should match you up accordingly. for example, if I was going with a kid smaller and not as experienced, I would work OFF him. Go as hard as he wants to. It's also an opportunity for me to do things that I wouldn't try on a bigger and better guy, like more just shelling up and taking it on the ropes to hone those skills. It sounds like the guy was working against you and not with you.