Specifically in terms of men, I can see how Clinton would be a lot worse. First, there's the "paycheck fairness act," which will harm men, their families, and decimate high-risk-but-well-paid male jobs if it's passed. Expect women's groups to lobby her on this one.
Second, while Bush might be a warmonger, she is too and she'll have no compunction sending mostly male troops overseas, yet then go around talking about how women are oppressed. Getting sent off to die is a pretty big form of oppression, I'd say.
Then there's the ever-expanding rape laws, which you have to expect her to get behind. Come to think of it, virtually all the pet subjects on this forum regarding gender relations are things she'll be on the other side of.
Finally, back in 1998, she was quoted as saying the following. I think the below quote, more than anything, sums up how women see men as disposable, and shows exactly why men should fear them as leaders. The obliviousness to the lives, worth, and sacrifices of men in the quote is astounding:
"Women have always been the primary victims of war. Women lose their husbands, their fathers, their sons in combat. Women often have to flee from the only homes they have ever known. Women are often the refugees from conflict and sometimes, more frequently in today’s warfare, victims. Women are often left with the responsibility, alone, of raising the children."