He might be above all, but perception is bigger than reality in a lot of these social situations; negs can serve to "expose" and bring them down to reality. They are using their social status, the man is using a "reality check" technique. If he's a chump, who does believe is lower than her, then it is lower value, and that man has no business using negs until deeper issues are handled.
The point is not wether you are assuming she is higher value or not, but how she perceives herself. Women of beauty and certain quality, for many reasons, in their head, act and behave as if they are higher quality, that is what the neg is for, to bring them down to reality.
A man doesn't need to think he's below to use a negative, but if SHE THINKS, in her own mind, then he will stand no chance. So a neg is a tool to bring them back to reality.