Opel Blitz truck from Bertgold - model origins?

I even installed and played the Mortyr 2 today - to check the Opel Blitz truck Winter model in the game itself, since the Youtube footage that i found wasn't in good quality (probably due to the video compression).

I made some pictures of the destroyed Opel Blitz Mortyr 2 model from various sides - see below. I think, that its Medal of Honor: Spearhead counterpart still looks better though.