Talk:Princess Twilight Sparkle - Part 1/@comment-5837525-20131113152117/@comment-7345250-20131113233017

Hmmm... the story never mentions Celestia being defeated. It says that she tried to reason with her sister, but no other information is given. Any idea of what happened between that encounter and Nightmare's ultimate banishment is purely speculative.

Since there is so little information concerning the manner of their dispute, it seems that this theorist is trying to "fit" the image into a previously conceived headcanon. It may prove correct during the premiere, but for the time being, there is no evidence to say that Celestia was defeated in the past.