We can split hairs over the different kinds of nerds, but I'm interested in how you would describe a group of people who sit in a room for 8 hours in a row while roleplaying foreign affairs on a fin-de-siècle map of Europe ;).
Even as I was hitting "submit" I was reconsidering my comment above, so your point is granted. I think I was just imagining the epitome of a great diplomacy player. In my head, this is someone not just smart, but charismatic, persuasive, and, shall we say, "ethically flexible." Say... Bill Clinton, for example; not someone I would have originally categorized as a nerd, but who might well meet that description upon reflection.