Daniel Axe / "daxelos"
Without having had a real look at the rules of both of the games, I sure assume that they are very similar in concept (divided Russian fronts and such). Also the scale seems similar: 1 turn = 1 day in Race to the Reichstag and 1 turn = 1 or 2 days in Race for Berlin.
The point is, that they probably play quite differently:
- Race for Berlin is an Area/Impulse game with a half map and 140 counters
- Race to the Reichstag is a Hex & Counter game with a full map and 228 counters. Also rules-wise it is probably more detailed.
I can not comment on the quality of both games as I have not played them, but hope this helps a bit. Race to the Reichstag seems to be a bit of a bigger brother of Race for Berlin. On the other hand some people really prefer Area/Impulse games for close quarter city fighting, thats where this family of games originated.
Lastly here are links to the respective rules of the game so you can compare yourself:
Race for Berlin:
Race to the Reichstag: