All points to MGS3 being AAA and i indeed think it' ll be AAA.
But what i think is going to affect the AAA status of the game (still it' ll be AAA) is that the game won' t be sooo long.
Of course i' m not sure of that, but considering the first one was not very long and that the second one was 5 hours long with nothing to do after you beat it (at least it was to me) and not really incentives to go back and play it again.
Well that' s me, what do you think??