User blog comment:IamJakuhoRaikoben/Chapter 431 & 432: My sword is... & Brair in Love, Review./@comment-7418318-20150429195415/@comment-24.177.95.45-20150429200421

I think it a weaker version. The three times Natsu used Dragon Force the number of scales differed more scales means more of a transformation seem to equal greater power.