Ah, crap, copied the wrong vote. Fixed, thank you.
As for Russia, etranger has confirmed on discord that we still get the benefit of our previous fortification action in Poland. So any repeat of last fall is going to go just about the same except the Russians have fewer troops. Konigsberg is an exception of course, but it still has some fortifications, just not as good ones, and we can freely supply or evacuate the garrison by sea if we need to.
Even if we do lose some ground in Poland, the Russians are going to pay a tremendous price and leave themselves vulnerable next turn for a more focused offensive once we take care of Austria.