[Omg, it was how long ago? You weenie.]

Yeah... Well, chalk it up to another unexplainable mystery of Pokémon World and call it a day, I guess.

Well that's typically true of trainer-bred Pokémon, isn't it? Though in this case, it's especially true given the whole rampaging thing. Can't know how the world has changed if you were just born in this era, after all!