User blog comment:FairyRaven/Fairy Tail Chapter 398: The Final Duels, Review and Commentary/@comment-7418318-20140901145939

Actually the more I think about it, the less I like the idea of Gray being so freaking powerful.

Take a look at the team: Erza and Natsu just defeat the enemy by overpowering them most of the time and Lucy barely ever is allowed to fight. Gray was the only one who had to use his wits to defeat the enemy, outsmarting and outmanouvering them with flexible magic.

And now he too can just overpower the enemy with sheer strength alone and doesn't need to think anymore...