no it shouldn't...and the 4 men vs 6 men survivability is fake...Maxims get chewed up quite easy
Oh and let's not forget the sniper range of the MG 42
MG42 needs to have a wider arc than the Maxim, unless you plan on giving grens a non-doctrinal Oorah ability and shortening the MG42 pack-up time to 1.5 seconds.
Maxim crewmen have the same stats (better guns actually) than MG42 crewmen so it is a fact that they are more durable.