This hasn't been confirmed by Game Freak or the Pokémon company to this day. I think it's more of a coincidence then having any significance, but I gotta be honest it does makes sense.
Similar to what Vaati said, I believe it's purely a coincidence. It would make sense if it was true, but until it's confirmed I choose not to believe it.
Na that's definetly true, Ditto is a failed clone of Mew, this may not be true but I think it is, pokemon has given us so many of these things, it's no longer a coincidence.