Relative Powers

[obloquy]

No. I am not unaware of this. It was my understanding that the Maiar who entered Arda clothed themselves in corporeal forms of one kind or another. Do you mean to tell me that Maiar in Valinor live there incorporeally?

Yes. At least, they can, and it is written that Olorin in particular often did. Clothing oneself in material raiment is very (in fact, crucially) different than incarnation. The Istari were incarnate, meaning they could be slain as any Man or Elf, and could not simply shed their bodies if they tired of them.