uh sun set shimmer is better because in one of the shows starlight glimmer took everyone's cutie mark away but except hers and one day all the ponys saw it and some how used there power to defeat her and that whet I'm TALKING about

because starlight glimmer was wiping it of in private she locked all her doors and closed all her Windows except one and flutter looked in it and she saw the cutie mark then she anouced it to all the pony some how they found and got there cutie marks back and sunlight shimmer helped and every one defeated her with all there power and then sun set shimmer chooses to stay on the pony's side YAY!!!!!! :)