Talk:Orihime/@comment-24346669-20140107134852/@comment-124.180.16.169-20140107175338

Yep buffs are multiplicative. It's bonuses like buildings, friendship and passive skills (eg. High Vamp) that are additive.

Two 300% (4x) boost should equal 1500% (16x) the original amount actually. After that, the game calculates the AW's defense so you'll notice more boost to your damage. And if you hit 750-800k, it then cap your normal attack damage there unless you hit an opposing element.