I had a similar kind of thing back when I played WoT, all the non-Russian players would constantly complain about Russia being OP yet the Russian players often complained about Germany being OP with their nigh impenetrable armour.
As someone who only ever played Russia, most as Artillery, I have little clue if there was any truth to Russia being OP but I rarely ever considered German tanks as valid targets because even my Artillery shells would bounce off most of them.