Generally I think T2 is much safer against Ostheer since a fast 251 + 222 can be pretty nasty. I think AT Partisans pretty much hard counter 222's and since you go with a single Conscript just make sure you tech early AT nades to snare the 222 when you pop out of a garrison. Lately I have been struggling much more against 251 flamer rushes just before I get my Guards out. If you go Partisans, don't be afraid to got T2 to get Maxim's to support your Penals against the LMG Grens and Panzergrenadiers. LMG Grens are really only superior to Penals at max range. What maps do you tend to veto as Soviets?
I tend to veto Minsk,Kharkov,Semos Summer and Lost Glider, but then again you always get the same maps such as Crossing,Langres,Kholodny. And LMG grens are superior to penals even on mid range so with penals you're not gonna able to get them out of green cover/garrisons. And going AT partisans just for 1 222, will destroy your late game unless you tech with all that fuel...