[1.0] Char sheet damage comparison is wrong

[greycat]

With one weapon wielded, I open the character sheet, click Attack, and check my stats. I have Damage: 33.

I equip another weapon, open the character sheet, click Attack, and check again. Now I have Damage: 30 (+2).

The (+2) should be a (-3).

Then I switch back to the first weapon, check, and I have Damage: 33 (-2).