I still think that the real 3D Mario will be announced and released this year.

[AstroGamer]

Soundwave said:

There is no "Miyamoto game", Miyamoto is in charge of Nintendo software development as a whole. He's constantly overseeing 5-6 games at minimum.

Also EAD Tokyo does have two teams, but they work in unison when a project needs to get down and get finished. So it's not true that EAD Tokyo team 1 has just been doing nothing, they did contribute to Mario 3D Land and 3D World for sure, if they didn't, neither of those games would've made it out on time.

Also looking at the credits between 3D World and 3D Land ... they look like completely different staffed teams to me or at least the 3D World staff is considerably larger. 

Yeah, It doubled from 3D Land from about 50 to almost 100. And while Miyamoto supervises their software development division, I don't think it means that Miyamoto couldn't be contributing a lot to a certain game as a producer a bit more than the others.