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.
Ding ding ding. CoH2 and the franchise as a whole has an absolutely huge skill ceiling. The sheer level of nuances that players can utilize is immense.
The problem is that most of these nuances are not intuitive at all, such as how front and rear armor actually works, (also is there still the loadscreen tool tip that says there's side armor in the game?)
The various versions of the same weapon like stgs and ptrs, or the cloaking rules that govern snipers are likewise things that are hard to figure out without analyzing game files and so on.
The plethora of unique game mechanics, from infantry squads to suppression and cover, are unfortunately constantly overshadowed or rendered insignificant in the face of broken units, factions, and an extremely dumbed down playing field. (By which I mean maps and their lack of variable resources and cutoffs).