User blog comment:FairyRaven/Fairy Tail Chapter 324: The One Who Closes The Door, Review and Commentary/@comment-5668006-20130322140718

There is no reason for Natsu to not be able to defeat F. Rogue. He hasn't even activated his second origin yet. Zeref belied Natsu to be the only person able to defeat him. Erza mentioned Natsu will surpass her (which in tower of heaven and oracion seis arcs he definitely defeated stronger opponents than her.) Laxus appreciates his strength so does Gildarts. He's beaten more people with out the "nakama power up" than people he has with the alleged power up.

And now he is pissed, there is no way he won't dominate rogue and he's most likely going to use a new attack from second origin