Something tells me that homos are less likely to posses the skills to survive in a zombie apocalypse than heterosexual men but who knows I could be wrong.
You're basing it on the assumption that people react the same in extreme circumstances.
Under extreme pressures, people react much differently--social psychology has demonstrated this across different experiments. Put people under specific conditions and they do horrific things. The Prison Experiment (Zimbardo), where individuals who were assigned the role of guards, actually started to exhibit horrific treatment toward "prisoners." Or, Milgram's experiment, where people started to "shock" other people when certain environmental variables were changed. And, these were just made up scenarios--yet, people displayed horrific behavior toward their fellow human. Another analogy is when the 85 year old grandmother lifts the car off her grandchild--again, a person is put in an extreme situation and reacts differently than what would be expected.
Under extreme circumstances, you would be surprised what sort of skills people possess. I simply don't have the answer because we have nothing to compare a zombie apocalypse to (obviously). All we have are contrived situations that have demonstrated that people drastically change their behavior under certain conditions.