User blog comment:FairyRaven/Fairy Tail Chapter 363: The Stories That Demons Read, Review and Commentary/@comment-1153699-20131207173113/@comment-7418318-20131209123909

Aren't you going "a bit" over the top by saying that Acnologia could have destroyed an entire continent in one attack? After all the backstory only mentioned Acnologia destroying one country and even about that we never learned whether it was a one-shot or maybe something the Dragon did over the course of several days.

Hell... we don't even know for sure that Acnologia's attack would have completely wiped out Tenroujima or if that was only because of Fairy Sphere or some cross-effect between the sphere and the attack. For all we know Fairy Sphere might well work by shifting the entire place into another dimension and that's why the island disappeared completely.