Yeah, it definitely makes you think though! Feel like the signatures could very well be the differentiator.
Reached out to a ND employee at the time (who worked on UC2 and who's signature can be found on a number of copies) and according to him they set those editions up in the commissary (restaurant). The reason for the different signatures in different places was that people started from certain areas of the room and ran out of time signing (eat lunch, sign a few things, go back to work). They were also in the middle of moving to new offices so he said it was hard to remember how they did these specifically. But he did imply that it was his understanding that they were signing them for the contest prizes.
So it's very possible there are indeed 200 of them in existence that have all the necessary components (including the signatures), but this is obviously total speculation.
