4v4 balance was not that bad a year ago. Axis had a slight lead in win rate but was not over 55%(top 200), same as the Allies did in 1v1, which instead had an advantage. The patch released earlier this year has already brought the win rate for the Axis around 60%(in 4v4). I was hoping the June patch could fix some of the issues, but it only worsened the situation. And then Relic is telling me they are hiring people from the community, which I assume are those belonging to the current CoH 2 balance team, to assist the balance in CoH3. Oh boy, I can't imagine how bad it will become.
Where do you find this info? To my knowledge there was no stats site a year ago. The earliest of pagep's data is march this year.
However, to the point:
I agree that 4v4 balance is bad and that it probably worsened since march (from about 55 to 58-59% axis wins), I am reluctant though to blame only the balance team for it. If you look at the chosen commanders, you see a clear pattern: Ost, OKW and Soviets have a decent selection of commanders. UKF and USF however choose commanders with artillery or strong offmaps. This however is mostly Relics fault. They designed those factions shittily and probably did not allow core changes is that regard. Arty is crucial especially in 4v4. Both Axis factions have them stock, allowing them to get commanders to what they need. 2 out of 3 Allied factions don't, you pick the commander to cover your bare necessities rather than getting an actual strength.
I am not saying that the balance team did not make mistakes. Scott changes in my eyes were bad, the Scott should have been the late game arty replacement. USF AT changes were not fundamental enough either, leaving the faction not in any broken state, but just a boring one regarding AT.
Brita were... Well, to be honest I think without adding units this faction is beyond repair. In my eyes, the team did well with what they had, even if it is still unsatisfactory