Testing out Warrior/Highlander stuff without a weapon for consistency:
Thrust, Bash, Cross Cut, Sky Liner and Moulinet follow the normal formula.
Wagon Wheel is (Atk+SkillAtk-Def) x 1.1. However, unlike Ice Bolt, this 10% additional damage is NOT additive to the armor modifier. On cloth targets it’s 50%*10% not 50%+10%.
This is wrong, it’s not per charge level, it’s just a flat +50% added to the total damage. Cartar Stroke’s damage simply changes per charge level as do all chargeable skills.
Using a level 10 Cartar Stroke at 5 charges on a Dumaro, while having 78 Attack and 5% on the damage attribute, gives us the following formula:
(78 + 385 (level 5 cartar stroke) - 72) * 0.75 (Leather penalty) * 1.5 (Skill modifier) * 1.05 (Attribute) = 461
So yes, so far, it would seem all chargeable skills have this innate 50% damage increase. I’ll go check on my Archer’s Full Draw next.
Edit: Seems like it. It doesn’t match but I have no idea how archer’s Missile penalty works on medium sized leather targets so I’ll chalk the disrepancy up to that. I do know that it’s much higher than the damage without an additional 50%, and the missile penalty wouldn’t cause me to get MORE damage out of it so yeah…