User blog comment:IamJakuhoRaikoben/Chapter 439: Albareth Empire, Review./@comment-1776824-20150608225247/@comment-3290324-20150608235821

Once again, Erza was the best choice given the situation which I believe I specified above. No one said that Laxus wasn't the more logical choice. But, as you said (and as I have already said), Laxus wasn't there. So he wasn't an option, which was why Erza was the best option.