Best DPS class in the game?

[Ayvar]

in addition, bards have - as far as i know - the only threat reducing ability in the game. don't know if it's cross class.

Actually Dragoons have enmity reduction from Elusive Jump. Not many people, or even most Dragoons, are aware of this. So if you see a Dragoon low on the threat meter it just means he saw himself catching up to the tank due to his massive dps and popped EJ to drop himself down