User blog comment:Bioniclepluslotr/Black Ops WWII weapons in Multiplayer/@comment-24476373-20110115163655

IDK. They would have to set up special servers, and the PN weapons can't be brought into regular battle. That would be unfair to those who don't have the weapons.

However, the could do a separate lobby thing with these weapons and a few other W@W weapons only, and special maps, kinda like how BC2:V worked.