User blog comment:FairyRaven/Fairy Tail Chapter 389: The Twin Dragons vs. The King of Hades, Review and Commentary/@comment-98.218.131.180-20140620180748

I think that rogue had put himself through intensive training after the GMG due to the fact that he heard from natsu that frosch would be killed if he wasn't protected so rogue put himself through intensive training so that he could protect frosch and became stronger than he had been at the GMG after all rogue couldn't turn himself into shadows and use it to travel on the floor during the GMG that was something future rogue could do and he could do when possessed by the shadows