How is the world outside of Crusader Kings II's boundaries generated? Does it default to the standard EU4 1444 set-up?

How thoroughly splendid, then, that Paradox has created a tool to convert Crusader Kings II saves into worlds playable in the upcoming Europa Universalis IV.

Ahead of its launch next Tuesday, Paradox has a released a demo for historical strat-o-rama Europa Universalis IV. In slightly less pleasant news, though, it's announced that the Crusader Kings II ...

There is no way to form the empire in Europa Universalis IV, it will have to be done in Crusader Kings II first. How does the converter decide which Europa Universalis IV tech group to stick you in?