Sorry I didn't state it clear but i'm the Ostheer player.
I don't like going Sniper against Soviet cause their large squad sizes just make the sniper play seems unrewarding. Also, is it just me or Grenadier just don't stand a chance 1v1-ing the Penal? If that's the case then how the hell i'm gonna stop them without sending a pair of Grens just to deal with 1 Penal squad?
Work on your MG play, try this build for now.
3x Gren 1 MG into a Mortar
Then Phase up for LMG's and medic bunker
Eventually you'll be comfortable enough to do
2x Gren 2x MG, good MG micro is HUGE in 2v2, especially when players are stacking on one side of the map.
I like sniper play as OST, because you can snipe models and let your OKW wreck even more havoc with his stormpios and AK volks