As far as I know (which isn't a lot about Albatrosen!) the proportions of the cross itself were standard... I remembered I had the Pheon " Voss" decals and the fuselage cross is pretty much the same. The tail cross is different, but the Pheon one does not have the white outline as the tail is Jasta 2 white. It does look a bit skinny too, but that could be due to the missing outline I'm used to seeing.
The Roden one does look much bigger and fatter, hence my confusion. I wonder if the Albatros Datafile special (which I don't have, unfortunately) shows this on their drawings...
Jeroen