User blog comment:IamJakuhoRaikoben/Chapter 464: Natsu vs Zeref, Review./@comment-4933386-20151130223153/@comment-27276334-20151130224204

Remember, Natsu isn't all that intelligent. He may spout inspiring quotes half the time, but he often doesn't think through situtations. This may or may not be one of those times. But, then again, Natsu spend a year developing this technique, so he may know the extent of his newly acquired ability.