I think a better example would be Daring Do is a recolored Rainbow Dash. And yes this show and lots of other shows reuse animation assets to save on money. But you have to admit its pretty funny how shameless it is and the season started and ended with Starlight Glimmer. I was disappointed Sunset Shimmer didn't cross over from Equestrian Girls. Though the universe would have probably imploded if Twilight and her three "what-if" versions of her were together.