First, I don't see Bahaumet as really being all that powerful. What I saw was Bahaumet escaping from Dalmud where he was chained and forced to provide power to Dalmud. The attempt to capture Bahaumet failed because it had not completed. That sealing was not being done by the Twelve. It was being done by Luisouix (sp?). Just because one powerful mage didn't have the ability to cast that spell on the fly, does not reflect on the Twelve. As I see it, the Twelve are in separate realities from Eorzea and don't pay much attention to what they consider trivial problems. Just because we don't think they should have let the Era end, doesn't mean our viewpoint means much. SOOOO... Events do not reflect on whether or not the Divines might still provide Divine blessings and aid.