User blog comment:FairyRaven/Fairy Tail Chapter 336: In Order to Live Today to the Fullest, Review and Commentary/@comment-4829046-20130621122954/@comment-76.124.155.27-20130621153533

I choose to think that Atlas took advantage and tail whipped and sucker punched the other other dragon. Or it was magical backlash from Natsu's attack. Either way the gate got smashed big whoop. They barely survived the dragon onslaught and Acnologia is possibly on the way and as it stands they stand no chance of surviving that.