Some Powers don't benefit from % bonuses that they should.  I tested this by finding gear with only the bonus I needed to test and swaping it out and looking at the dmg change on the toolbar.

Bio-Lightning doesn't benefit from AOE

Fiery Form benefits from nothing

Inferno does no damage in the first place but seems to benefit from nothing as well

          Inferno hits for 70-100 maybe 4 times a second while I have other abilities that have ~4k dmg pre buffs in the toolbar

Shockwave Benefits from Nothing

Constrict doesn't benefit from Armor breaking %

Running AP mastery doesn't benefit from Armor Piercing %

Side note if self is supposed to not be melee or range Maelstorm benefits from range while being "self"