The problem is that (in anecdotal experience) men and women simply handle it differently - men might get angry, offensive, even aggressive, while women might cry, gossip and manipulate. Different people might evaluate the negative effect of different behaviours differently, but that doesn't mean that any sex is handling rejection any better.
"Men usually get the rough end of this deal [office breakups], too, because women aren't good at handling the inevitable rejection."
You couldn't pay me enough to tweet that.