Celestia once said in the comics that she actually hides her power level in order to allow Twilight Sparkle to grow and improve. As far as we know, this over thousand year old princess has some pretty epic spells at her disposal. Considering she can move solar bodies, we probably never got to see what she is actually capable of.
So what do you think she could do if she unleashed the full power of the sun? Or is she really just super weak and easily conquered requiring the stronger Twilight to come in and save her flank repeatedly?
