>>19169960A Pokemon is a fictional creature developed by GameFreak.
Mega Evolutions are forms for new Pokemon. They don'thave to be super fucking different for it to be a Mega. Kangaskhan got a Mega but didn't change at all and instead it's baby did. That alone fucks over all the bullshit points that the legendaries on the boxart aren't Mega forms.
>Can we know?Yes because the fucking trademark list with every other Pokemon that had a Mega Evolution has Groudon and Kyogre on that list. Why the hell would they give Groudon and Kyogre forms while also introducing Megas for Latios and Latias?