That’s a good point. I kind of touched upon this by saying “successful hits” and “where and how one hits.” I guess I wasn’t very clear though. I play a game called The Dark Mod, and in it you can fight with a short sword. If you attack an enemy’s plate mail it deals no damage. So even if an enemy is unable to block my attack, I must hit unarmored parts of his/her body. I wouldn’t consider slashing plate mail with a sword a very efficient attack, but even though a sword is a cutting weapon it will still deal concussive force to the body under the plate mail, especially to the head; so it should at least deal a small amount of damage, I think. Even if I am right about the concussive force, a sword would probably break before you could kill an enemy by bashing their armor with it. So I guess your right on this point.
I guess the gist of what I was trying to say is that I don’t want the player or enemies to be able to take an unrealistic amount of damage to their bodies.