cons are so much useless against OKWE in mid and late game, in early they can do good damage to volks but they lose to sturmpios, late is obvious, cons can't stand a chance vs Obersoldats or fusilliers
in my opinion all game modes favors allies because soviets in 3v3 or 4v4 can troll so much with their epic doctrines like winustry or cunterattack B-4 spam while ostheer doesnt have anything great like dat, in 1v1 soviets dominate all the time and 2v2 is simple, one guy spam maxims or snipers while other spam conscripts and its gg
you can always change game language, for example to German, and then you'll have german voices on all faction units. It's worth to note that enligh voices in CoH2 units are totally lame, except the USA voices