User blog comment:Jho5689/Fairy Tail 337 and onwards/@comment-5105419-20130623082707/@comment-7418318-20130623083250

If you mean the one from the mural, we don't even know what exactly is depicted there.

It could just as well be a representation of the struggle between Dragons and Dragon Slayers in general, rather than documenting an actual fight between Acnologia and a single Human.