To reverse it, if you wanted to give someone a beatdown, would you want to fight someone smaller than you, or tag-team with a buddy to take down someone bigger than you?
I'm not macho. In my younger years, I talked my way out of some fights and I even walked away from a number. However, if you're in a situation where you will have to fight, you need to pick and implement a strategy that will give you the best shot. Also, I agree with the previous poster about the nut shot. If you try it, you're immediately off balance and if a guy has the adrenaline flowing, it's only likely to make him more willing to fight. Plus, nut shots hurt the most when you're loose and relaxed, not when they're coiled up in anticipation of a fight.
It sounds to me like maybe people should fight the two little guys then. They seem to be more prone to cowardice and blame-shifting, judging from responses so far.