Define "win."
I could probably not outrun a guy. However, I could either hide in a crowd, bail into a store, or kick him in the balls and flee. That'd probably work, and I count that as a win. (Remember, kids, you win if you come out of the fight intact. This means you don't have to land a punch. At least, that's what my sensei says.)
As for an actual fight, where I have to put knuckles/palms/knees/whatever on skin? Yeah, I could definitely take one unarmed guy. But it's not going to be boxing/sparring style; it's going to be dirty fighting. Groin kicks, palms to the nose, knee to the face when they double over, broken elbows, all that. No mercy. Some drunk guy decides he's going to come get some, and my life might be in danger because there's no way I can get away and he's looking at me like I'm a steak? I hope he likes learning to use his limbs again.
Guy with a knife or a gun, at melee range? Hmmmmmmm. I like to think I can deal with it, but I am still very wary. You really have to *commit* when they have a weapon; that's the point at which you can't half-ass things even less than you already could. Someone punches you, they can knock you out, yes. Someone knifes you, you might die right there. Once that weapon is out, you're either gone, you're cooperating so the guy leaves with your wallet and not your life, or you're on that weapon arm like dots on dice. No middle ground, and once you choose to either fight or flee, you have to really do it.
Add a second guy and things get nasty. While we do train for multiple attackers, I'm not that badass yet, and besides, it's just never a good situation. There are some basic tactics like "don't let anyone get behind you" and "don't stop moving" and all that, but...really, you just don't want to mess with that. I am not confident I could take on a group, where a group is more than one.
