You are correct Alerith, you can clearly see his symbol if you pause just before the seal breaks. I guess I just don't like the concept that Bahamut could be stronger than the Twelve, so I wonder if perhaps simply his symbol being shown doesn't necessarily mean he was lending his power to it. I mean, it all seems like a strange coincidence -- his meteor symbol, titles, and the information given in the Of Archons and Muses quest.

Thanks for your input!