User blog comment:IamJakuhoRaikoben/Chapter 284: Pandemonium, Review./@comment-5086237-20120527173626

It was nice of Cuotinho for bringing the idea that Erza shouldve chosen 51 monsters instead of 100.. =) with that she might still be able to participate in the battles.. I really wanna see her new skills, armors, weapons.. Wish it would be as awesome as Mirajane's satan soul..

Another reason why choose 51 is to give Cana a chance to show her stuff, and few points for FT B..