Still... it does pose the question; Just what happened to Bahamut after the events of Dalamud's fall?
With the little destruction taken by Gridania, as seen in the Alpha video released... (and leaks, if you're into that kind of thing), we can at least be sure of this; The damage to Gridania was not severe enough to break the stained glass window in the Adventurer's guild.
If you ask me, Limsa got the worst deal of the cities. They got a whole spotlight where they get totalled, so we'll have to wait and see how underwater they are.

More importantly; whatever the hell defeated Bahamut in the 5 years until ARR comes out...

I bloody hope it's on our side.