Agreed, I feel like a really well played Wehrmacht is actually stronger than OKW. There are just not many people in this community who can use their units (especially MG42s) to the maximum effect.
And the tendency of homogenization will continue in the next patch from what Ive seen in the patch notes. Factions get more and more linear in favor of balance. For example they're planning to no longer require techning for Wehrmacht t4 and make the t3 building the only requirement which would take away another choice the player has to make.
This is real. I say this knowing that I'm not that good, nor as good as I used to be, but when I watch the top level players, they really don't play optimally. So even at the highest levels it's hard to glean what the balance is truly like since half the top players aren't using hotkeys to micro vehicles(!!).
I know the stock response on these forums is "well most people are casuals so lets balance for the casuals" . However, I think it's okay that there's some niche games that still have a high skill ceiling, and are balanced around that skill ceiling. If the game is made too easy then there's nothing to strive for.
To tie this back to the main topic: I really feel like the struggles against OKW are a combination of OKW being easy to make mistakes on compared to the other factions, and an L2P issue.