Lets first understand what is a Motorized and a mechanized, a motorized infantry is a Civilian Trunk full of soldiers, where a Mechanized is a armored military vehicle.
in theory Mechanized infantry is about Premium squads, True? no False, because German free APC squad is a unarmed Half trunk.
so, if Russians have Motorized infantry, and Germans Have mechanized. Why not give both of they both options? I mean a civilian trunk for Germany AND a unarmed Halftrunk to Russia?
i mean, the Free APC of German is to slow, but it can take a lot more bullets, and the treads really help in some situations while the Trunk is faster and easy to manuever in some situations, just to keep things away from Premium squads, DO NOT PLACE machine guns in they.
still, Premiun crew is a lot better armed, so it,s still usefull pick a Premiun squad, since the crew is A IMPORTANT ASPECT of all light vehicles squads.
cheers.