User blog comment:IamJakuhoRaikoben/Sorcerer Magazine, Issue 42: June 2015/@comment-1153699-20150702021033/@comment-5894890-20150702190515

I agree. Cana just seemed sooo weak in that fight (Lucy included...). Though, I honestly think Mashima toned them down during that time; I still think Juvia has the upper hand like you said.