User blog comment:HephaestusThePrivateer/Fate of the Queen Anne's Revenge/@comment-5120604-20120222211145/@comment-4898132-20120228052652

As per the text of OST, Barbossa's goal was to get his revenge on Blackbeard by killing him with his poisoned blade. Claiming the Sword of Triton (as well as the QAR and its crew) as his own was more of a bonus.