Don't really see why Zelda would be considered an megaton announcement thought? Unless it's coming in less than a year than most people already expect to see "another" Zelda game IMO
Nintendo needs some third party support (at least the new COD/Battlefield/Assassin'/ect) along with that one true 'megaton" game like an Pokémon Console game or something unexpected like another Resident Evil 4 bombshell.
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Sony's is in a good position though, since just about everything MS showed was already heading to the PS4 minus a couple of exclusives. God of War, Uncharted, Little Big Planet, or anything else sony has can easily go up against the few exclusives MS showed like Crackdown 3 (really, MS WTF is up with that one).







