Many, many average men have won fights against superior numbers - if their weapon was capable of it. You can't use capability you aren't carrying. The fight in the dog is more important than the dog in the fight - but if your weapon runs dry, you are pretty much done.
"I probably won't need more firepower" sucks as an epitaph.
"The sum of virtue is to be sociable with them that will be sociable, and formidable to them that will not." - Hobbes