It seems to me that it's really hard to advance fast enough from the end of 1944 if only 5 target markers are provided so that the Soviet player can win.
Any one has such or opposite experience?
Very good question!
In fact I changed the number of target counters in the game because a lot of people mentioned to me that the Soviets were too stong in 44/45 because they could do unlimited attacks. IMHO this is true, and it was not historical to allow any of the two sides to do more than 5 attacks per turn. Even GMT inquired about the problem when they first wanted to publish the game. The Soviets have a lot of "EX" results on their CRT and should be able to at least attrition the Germans to death.
I playtested the new system very much and it seemed to work just fine. 5 attacks is already A LOT! I almost lowered it to 4 in fact, but decided to be conservative.
Also remember than in 1945 each turn is just one month, not two!