All the discs are cut as far as I know (although maybe the new Japanese disc might not be?... the old one certainly is cut). Not sure what version the German disc has but judging by the length it is probably the same as the Wild East disc and UK disc and whatever.
The difference in length to uncut version would be around 5 minutes and over 50 separate cuts. All the DVDs are around 85 minutes in PAL (also the old Japanese and WE discs) once credits are removed, while the old Toppic VHS from Germany is 90minutes in PAL after removing credits. The VHS is missing some boobies though. There is a good quality 2.35:1 version around somewhere, probably from the German TV, that may be at least almost uncut (not sure if the boobies are still missing...).
From what I can remember when comparing the two version I think the cut version is better, in fact it seems more like an edit done on purpose to make the film flow better.
Only thing I can remember missing that should be put back is the scene where the old man touches the white jacket with his bloodied hands (seen on the trailer of the film) and maybe the gunhttp://www.spaghettiwesterndvds.com/screenshots/duello35sx.jpg (but the gun isn't used anyways? so...).
Almost everything else just make existing scenes a second or more longer (or gives as an extra unnecessary shot of the passengers inside the wagon or the old man Saxon in the train station or the shooter there or Philipp Wermeer's head under the waterfall or whatever) without adding anything. For example when Lee Van Cleef is tapping the bottle with his finger and the other guy charges into action right at the moment LVC taps the bottle the third time (I think it was third...).... in the uncut version we just linger on on the bottle and LVC's hand for a second or so before the action happens.