User blog comment:IamJakuhoRaikoben/Chapter 394: Juvia vs. Keith, Review./@comment-25111584-20140725174801/@comment-7418318-20140725190529

Considering Erigor vs. Natsu I suppose wind would have been a good choice, if it is available. After all Erigor had Natsu on the ropes for quite some time even though Natsu was the stronger of the two.