As I stated a moment ago, most Twintania kills have been double Bard for more reasons than just Song coverage. A decent bard who's following his cooldown rotation properly will easily outstrip a BLM or SMN, completely obliterate a DRG, and run just behind a MNK, given similar gear for all of them, even if everyone's standing completely still. The only time their damage dips is during Ballad/Paeon, and even then they can beat a DRG with that running.