no your not and your bias is rotting the forum. no one is allowed to post of another faction unless they actually played it and thus know its strengths and weaknesses.
Apply that to yourself and stop posting.
If a unit is overpowered, then it doesn't mean how much it costs and how late it arrives-its still overpowered.
Want example? JagdTiger.
Obers are JagdTiger of infantry.
Oh, and obers cost menpower only, menpower have no penalty, OKW gets as much as anyone else.
Tech costs are also no argument, because OKW have fastest and cheapest teching in game, so lower income is completely irrelevant here.
Units are superior by superior scaling, this is the factor that balances fuel/mun penalties.
Play the game as allies and definitely play more as OKW, because you have no slightest idea.