WAR Tomahawk is overpowered on mobs that have special defenses, doesn't work on Shadowlord

Using WAR merited ability Tomahawk on mobs with special defenses significantly increases DPS, expected damage output is about 30x (or more) than expected.

GreatAxe vs Elemental

GreatAxe vs Skeleton

Versus Physical Immune Shadowlord does not work:

Expected behavior is that special defense is reduced by 25%, so for example an Elemental should go from -50%(?) PDT to -37% PDT. (New Value = Original Value * 0.75). This should be possible for Total Physical Immunity / Invincible => -75% PDT, but also on damage types Slashing, Piercing, Blunt, H2H.

https://www.bg-wiki.com/index.php?title=Tomahawk_(Ability)&oldid=108803

For example Before > After Tomahawk:

• Skeleton Piercing 50% Immunity > 37% Immunity
• Skeleton Slashing 12.5% Immunity > 9.375% Immunity
• Skeleton H2H 12.5% Weakness > do not apply changes
• Skeleton Blunt 25% Weakness > do not apply changes