User blog comment:FairyRaven/Fairy Tail Chapter 314: Erza vs. Kagura, Review and Commentary/@comment-4999650-20130112111637

Considering we have Future Lucy here, I think it is safe to assume that this is a "Prevent the future" arc or something. It would be interesting if Erza did indeed die here, and considering the assumption of the arc, they might change the past hence Erza would be alive~