Originally Posted by
lacco36
There was a ruling somewhere (I do not remember the exact location, but will try to find it for you), that if the difference between rolls is 1 or 2, the attack still manages to hit.
On the other hand, if you fight carefully (i.e. try to save your skin) and defensively, it's not uncommon for both to receive few smaller wounds before someone strikes true... and then, if you fail to get medical attention...
If you wished to actually model reality a bit more closely, you could also define which wounds are internal and require surgery (or lead to death) and which can be simply closed with enough bandages and skill in First Aid.
Meaning: if you get a stab wound in your belly, the First Aid skill may only halve the bleeding, not completely close it, as opposed to a deep cut on arm.