Like I said some are the same. The Sartana disc (still FSK-18) is also the same. The Halleluja Django dvd even has English when the original X-Rated disc doesn't.
I had a list of the early VZ-Handel releases with the differences but I seem to have lost it. I stopped looking at them after I started going to film fairs in Germany since the price difference with the X-Rated boxes became negligable.
You can check their sitehttp://www.vzhandel.de/, if in the comments it doesn't actually say ungekurzte fassung, I wouldn't risk it.
Also MIG has released X-Rated titles in amaray, for example Die Nonne von Monza