Jeezo criminy! Thatís really hairy stuff!
I canít answer whether men or women are more affected: thatís logically impossible, since for one thing men and women are all different and though they may as a group display tendencies, psychologically, to go in one direction or another, individually, they are all different and all respond differently.
As a group, men tend to react to stress betterÖ at least thatís what all the scientific articles Iíve read seem to indicateÖ so I think guys -- as a group (not each individual, mind you) could handle it better. I would probably break.
Of course, men do get raped regularly every day -- look at the U.S. prison system.
-- but then youíre getting into the injustice of the justice system. Donít go there, girlfriend.