User blog comment:IamJakuhoRaikoben/Chapter 417: A Lone Journey II, Review./@comment-24039250-20150127025907/@comment-83.253.84.32-20150127040407

I dont think Gildarts has ever fought Natsu seriously or used his full power against him. Well during the Tenro Island arc Gildarts was going to use his full Power against him but it scared Natsu and made him give up the fight.