Suggested by iKnowledge Aya can see into the future to an extent so that will mildly help her in the fight against Erza. Ultimately it will not be able to help her enough here though. Erza still has the absolute edge in speed and raw power. Just because Aya can know how to dodge doesn’t mean that she’ll have the stamina to do so forever. In a close quarters combat fight the most important skills to have are technique and speed. Erza wins in both of those so there isn’t much Aya can do to mount a comeback. Erza wins.