I think beside the damage that got absorbed by armor normally there might also apply skeletons' resistance against piercing dmg. I think you just do 75% dmg with piercing damage against skeletons. (which makes more than sense). So 38x0.75=28.5 minimum damage.
To be clear, I take no issue with the 13 damage the game said was absorbed. I take issue with the damage total, which, if Bully is working correctly, it should be factored in to (and which, as I pointed out above, should have been higher).
If there's another variable that reduced the damage to the skeleton, like piercing resistance, that doesn't even make it into the combat log, then I'd feel better about it. What I'm talking about here is something that cuts the damage at the start to the point that the game doesn't even consider it "damage done"...something that takes the number down before even armor can absorb it (like your calculation, which reduces the damage by 25% from the very start to reflect piercing resistance, does). It'd be a shame if the combat log didn't state this -- since it diminishes the value of having a combat log in the first place -- but at least I'd be confident that I didn't waste a talent point on Bully.
Can anyone else shed some light on, confirm or deny this? Do other resistances work the same way -- reducing the damage before it's even reported by the game?
- Geezer