Now, I know plenty of guys who are opposed to fake breasts, and I've heard plenty of them object on that basis. But I've never physically heard a man say that he thought a girl's chest was real, but too big.
I have. Those guys are out there, I just think they are the minority.
It's pretty easy to find out who's who too. Simply go to a topless bar with your friends and see which ones your buddies are tipping. Sometimes that has to do with their face or possibly even "dancing" ability, but in my experience at least 50% of the time it's about breast size/shape etc. This is where I first realized that a buddy of mine liked his women nearly flat chested. Anything larger than maybe a B cup was too large for him. Now, I can't say that he wouldn't have anything to do with a women with a C cup, but it wasn't his preference.