They're not mega, but primal.Yo minor bug I noticed. When you do /ds all, mega, uber you get this list:
Blaziken-Mega, Gengar-Mega, Kangaskhan-Mega, Lucario-Mega, Mawile-Mega, Mewtwo-Mega-X, Mewtwo-Mega-Y, Salamence-Mega
Note that Kyogre-Mega and Groudon-Mega aren't listed.