User blog comment:Renkrisb/The Dragneel Brothers/@comment-26416024-20150519215248/@comment-26416024-20150520161630

I guess it will have to remain up to interpretation but I in no way believe for a second that Igneel is stronger than E.N.D. I'm not trying to be argumentative but I feel like people on here are seriously underestimating how strong E.N.D. actually is. Think about how powerful a demon like Deliora was. E.N.D. is stronger than that and to top it off, E.N.D. even invented Curses. We have only scratched the surface at what E.N.D. is capable of so far.

I also believe that Acnologia has at least some fear of E.N.D. because otherwise why would he come to the Tartarus HQ? Mard Geer was certain that he came to destroy E.N.D. before the unsealing could happen and Igneel also believed Acnologia feared E.N.D. because he said to Acnologia that since the unsealing had stopped, Acnologia should leave the humans alone and go away.