User blog comment:Miskos3/Fairy Tail 534: The Door to the Vow, Review/@comment-1359322-20170428132516/@comment-7418318-20170428144456

To be fair Gildarts did say he was taken by surprise and on top of that despite being rather fast, Gildarts is still quite a bit slower than less manouverable than meteor-buffed Jellal.

In that way it makes sense that Jellal can dodge things that Gildarts couldn't.