Your claim was, that units have to be balanced around their performance and not the mix of units. I disprove your claim on an example. Why should i make a balance thread for that?
What did you disprove? Zis gun is too expensive for its perfomance - I agree, it's raketenwerfer & 57mm Tier. What has that to do with OKW P4?
You sound like: "Yes, the OKW P4 is too expensive for what it does, but so is the ZIS - case closed" - I don't see how that justifies anything.
Generalise all you want, belittle and be an elitist prick all you want, it's irrelevant.
If anything I'd compare the cost of fielding a Wehr P4 compared to the OKW one. If OKW's is more expensive to field (I doubt it) then reduce the cost accordingly. However doing so would mean making it the same as the Wehr P4. After all, is the vet 2 armour as default and better vet bonuses justifed "coz OKW" now? Nope.
I'm not here to prove your arguments. Especially when you insult me in your first sentence.