Yes I find this strange as well. Considering also that there are more collectors of German Memorabilia than Allied Memorabilia, and you can't tell me it's because the German stuff is worth more. Yeah, the Nazi did some very terrible things, but this should not discredit the German soldiers who did fight valiantly.
The rest of the world has moved on, most of the wounds have been healed, and I think it's past its time in the FPS world that the German's get their share of the cake, plus the allied stuff is getting very repetitious and boring.

Perhaps Finland during the Winter War would be a good alternative?