I just noticed that when you compare the potential damage of armed and unarmed attacks, the difference is negligible. A fist does 1d6 and a broadsword does 1d6+1. Whether you look at this from a realistic or cinematic point of view, this doesn't work for me. When you consider two equal combatants, and one is armed, and the other is unarmed, you would expect the unarmed combatant to be at a huge disadvantage.
Look at it this way. Let's say the average Elthos character has three hitpoints. A successful punch from another Elthos character does 1d6. This means that there is a 50/50 chance to knock out another average character. There is a 1 in 6 chance of killing him. The Broadsword is fine. A broadsword does 1d6+1. I expect, in the real world, and cinema, for a broadsword to easily down, and potentially kill another normal person with one blow.
However, I would expect a normal punch, from a normal person, to be far less devastating; probably 1d6-3, with a minimum of 1.