User blog comment:FairyRaven/Fairy Tail Chapter 368: The Third Seal, Review and Commentary/@comment-1153699-20140125173023/@comment-7418318-20140126004106

Since Jellal's thought projection was able to physically touch Erza (holding her chin to be exact) I don't see why it would be unable to do a fist fight, if that's what you were asking about.