Probably because of the 60mp per squad difference o top of the 80mp in teching difference. Funny enough the maxim also has 160mp in teching over the mg42, and is inferior despite the same per unit cost...
Again, looking AT COST you might be able to figure this one out... Once you have figured that out, triple the cost difference and maybe you can deduce why penals might be superior troops....
Off the top of my head? The maxim comes after 160mp in teching and could maintain a smaller than average arc. I'd bump its cost too to try and prevent spam. Functioning at least as well as an MG34 should be acceptable, costing more but more durable with less arc. Seems reasonable.
The. 50 comes later than all other mgs and works fine when it works, but is inconsistent, so fixing the traverse might be enough.
The Vicky, I'll admit I'm not sure. An MG34 with more damage perhaps?
But tbh were actually here specifically to do what you are asking, so maybe sit back and let those that actually understand the various factors included in balancing a unit discuss? You might pick something up, like how cost relates to performance for example.
The mg34 works fine. It does its job. It shoots at the enemy and they get suppressed. That's really all you want in an MG, everything else is gravy and as the cheapest MG doing the bare minimum is plenty acceptable. The issue with the mgs that ARE mentioned is that they are more expensive by a fair margin and fail to do that basic role remember from earlier where you discovered that the more expensive unit is supposed to be more effective? It's exactly like that! Arnt you glad you were able to figure out that super basic factor of balance? The sky is the limit now!
SO now you've moved from performance to cost you keep changing ur narrative, initially your issue with MG's was they struggled with performance, nothing about its cost. You keep making claims that the allied MG's cant do the basics (while u claim the mg34 does, even though it the worst from the lot, this is a clear contradiction on your part), and that statement is simply untrue. if cost alone is the issue for you then fine reduce the costs.