User blog comment:IamJakuhoRaikoben/Chapter 471: Until the Battle is Done, Review./@comment-5303512-20160202131244/@comment-1776824-20160203212753

I don't even think Acnologia gets more or less powerful when he shifts forms. I am under the firm belief that his power level is constant in either form, and that it is just how he exercises that power that is different. He already bathed in dragon blood and became exceedingly stronger because of that years ago. Him becoming a dragon is a complete side-effect, and nothing more.