User blog comment:BlackWizardZeref/Chapter 376: Wendy vs Ezel/@comment-166.137.12.52-20140320175525/@comment-7418318-20140320232953

I can see why Jackals curse-fed flames might not work for DF, but what about Atlas Flames fires that Natsu ate during the GMG?

The amount of flames alone must have been several times more magic power than what Jellal could muster in that beat up, almost dead state and that's not even considering that they were flames from an actual Dragon.