User blog comment:LegerPrime/Natsu surpasses Erza/@comment-5894890-20151009160914

To be honest, right now, I think Natsu is equal to Erza's power (based on averages, not including BS power-up's). Or Erza is still slightly stronger than Natsu, but not by much. Yeah, Erza probably has gotten stronger, but it's pretty obvious Natsu has been getting stronger at a bigger and faster growth. Where one point Natsu couldn't be compared to Erza, to now, where he's taking on opponents that are about as strong as the ones Erza is facing. Getting past that point, If anyone were to save Erza, I think it'd be Wendy. (and no, not battle Ajeel, but save Erza.) Wendy in this arc has been emphasizing how she wants to protect Erza, so it only makes sense Wendy will help. Since Erza can't use her re-quip due to certain factors (outside interference?), Wendy may be able to cancel any sort of abnormalities within that space, and if that doesn't work, she could provide a quick halt to Ajeel, quickly getting Erza out of danger and healing her injuries. Erza later rejoins the fight (vs... Dimaria?). However, speaking of the battle itself, like Makarov said... Erza is strong, but even she may not be able to beat Ajeel. I expect someone of Erza's level to either be fighting 2v1, or manage to win the battle by themselves, but get away with severe injuries.