User blog comment:FairyRaven/Fairy Tail Chapter 363: The Stories That Demons Read, Review and Commentary/@comment-1153699-20131207173113/@comment-1359322-20131209075900

Gildarts only mentioned that Acnologia wasn't displaying the level of strength he showed when Gildarts first encountered him, Gildarts never mentioned that Acnologia was serious when he attacked him. Hell i don't think Gildarts is so stupid to think that Acnologia showed his true strength when he fought Acnologia.