User blog comment:Linathan/Unit Spotlight: Eclipse Sibyl Madia/@comment-175.141.41.212-20150510213006/@comment-26140304-20150510220547

Actually, Atk buffs only factor into the unit's Atk stat, not BB damage modifier. In this case, it doesn't really matter how high or low the modifier it is as they are just going to receive the same effect. Critical and Spark buffs, on the other hand, are multiplicative so the damage output is significantly higher compared to Atk buffs.

Sorry if this puts down your suggestion but I can definitely see where you're coming from with that note. :)