User blog comment:Linathan/Unit Spotlight: Vicious Twin-Edge Logan/@comment-26336535-20160426205334/@comment-26140304-20160429103919

That's the correct formula. It's the way that it's calculated that makes Atk buffs and BB Atk buffs so similar.

For example:


 * Ultor's 200% Atk buff: (100% Base Atk + 200% from Ultor) x (100% Base BB Atk)


 * Haile's 200% BB Atk buff (100% Base Atk) x (100% Base BB Atk + 200% from Haile)