I don't mind the Mega Latis looking almost exactly the same. It kinda makes sense, 'cause they're living jetplanes, so they just got upgraded to the latest model. I think it would make a little more sense if they also had the same Megastone (it could be called Latinite). It would be neat to have one Megastone evolve two different species of Pokemon. But I guess they just each have their own stones. Oh well.