I didn't even know universities even use that kind of system anymore. Most of the jobs nowadays require that you have a degree with Bologna system. I found an article about the system that is used in German universities http://www.mawista.com/en/study-in-germany/german-education-system/ so I'm based on that, it clearly states the system and degrees. I guess you could ever go wrong with this system. The Diplom would only work for some inner companies and not all of them, it's hard to convince someone in another country what a Diplom is. That's my opinion though.