That, and as I mentioned before, the uncanny personality matchups. Even in other similarly-themed animes (Azumanga Daioh/Lucky Star/etc.), there was never as close a match as these.
As an aside, in the Japanese MLP dub, there have been three more songs (and on the latter two, I think they even outdid the original).
As an aside, in the Japanese MLP dub, there have been three more songs (and on the latter two, I think they even outdid the original).