My opinion is that Vanguard does not have diplomatic PvP, and it is just like all other MMO games. I really do not know how you came up with that conclusion. What aspect of PvP have you been researching? The players are not interested in battle of the words. You must have run into two very bored players, who wanted to see who is smarter. It is very boring, and takes too much time. Because that, player are not entering in diplomatic PvP. And to finish, what are you getting if you win in such a duel? I would say, nothing.