User blog comment:BlackWizardZeref/Fairy Tail Chapter 394: Juvia vs Keith Review/@comment-5303512-20140725094442/@comment-25244540-20140726073815

And I think we all remember how dark the Tenrou Island arc was, compared to the Tartarus arc that's just a kiddie game now.

It makes me wonder how Tatarus wasn't called the strongest Dark Guild