User blog comment:Miskos3/Fairy Tail 539: World Destruction, Review/@comment-7418318-20170610192548

I think this could be okay. It was already impossible to beat Acnologia in the real world. So there were only really two ways to make that final fight make sense. Either make him vulnerable due to the ravines of time, or make it in internal fight. Mashima opted for the latter.

And all the people who've been demanding a DS vs Acnologia endfight will get their wish.

When he said that he can't control all the magic flowing through him for a moment I feared he'd just blow up. That would have been both hilarious and disappointing. ^^