You're right. It is, but unfortunately it doesn't look like EDVE. There are some standard buildings and hangars but it's not the real thing. I recently attended a conducted tour around the airport. I live here for 25 years now and I've never been there so this was really overdue. Of course the dimensions and the structure are there in Germany North, but the most important and recognizable thing is missing: the historical main building.
I think all of the freeware or payware airports already exist in the ORBX world. But only with standard autogen buildings. So it is with EDVE. Maybe some day a local patriot of Braunschweig feels appointed to model this small but important airport (I hope this was correct english, as I put it together from dictionary fragments ;-)).
Jörg