User blog comment:DiegoAnime3000/A lot headcanons were confirmed today/@comment-10835289-20140829015014/@comment-10380701-20140829015552

Nah. The first time I heard "strongest girl in class", my Mary Sue-o-radar started blaring out. Her niceness was just the first sign.

Of course, just because she's a Mary Sue doesn't mean it's a bad thing. I've seen some Mary Sues written well. Though at that point, they're no longer Mary Sues.