User blog comment:FairyRaven/Fairy Tail Chapter 423: Do It All for Love, Review and Commentary/@comment-194.103.203.254-20150309125626/@comment-7418318-20150310164117

"Mashima did perhaps let Natsu use the Dragon Force against Natsu for a reason."

oO

I suppose the second Natsu was meant to be a Mard Geer, right?