I am pretty sure that I'm done messing with the stat system now. Here's how it works.
Each character has a 15/13/10/10/8 distribution to their stats. 10 is considered 'normal' in a stat. Weapons, off-hand items and armors will still, of course, mess with these, but the effects will be noticeable now. The once-invisible PHYS(ical) and M(a)G(i)C stats are now displayed on weapons/etc. as well - this way you really know how an axe compares to a spear.
Damage is like this:
If Melee or Ranged, add PHYS to the damage.
If Force or Psychic, add MGC to the damage.
If a mixture of physical and magical, average PHYS and MGC.
If Sleight, average PHYS and MGC and add 5.
If Melee/Ranged/Force/Psychic, add the respective stat (Brawn/Perception/Tenacity/Charisma) to the damage. If Melee/Ranged, subtract half the target's respective stat (Brawn/Perception) from the damage. If Force/Psychic, subtract 5 from the damage.
If Logic > 12, add 1 to the damage. If Logic > 15, add another 1 to the damage. If the target's Charisma > 12, subtract 1 from the damage. If the target's Charisma > 15, subtract another 1 from the damage.
This is your damage. Better than the percentages and multiplication and perfect averaging and TOTAL MESS from before, right?