Using the 'more than I'm doing' criteria also becomes pretty subjective. At some point that would make nearly everyone a hero! Hmmm...sign up, deploy, enjoy instant hero status....
I'm in a base camp overseas (Zulu +3). There is nothing heroic about it, nor is there anything heroic about being a target. There was nothing heroic about having terrorist car bombs in my housing area in Germany in the 80's. One need not receive a Bronze or Silver Star or a Medal of Honor to be a hero, but, IMO, your standards for heroics is way too low.