Based on the units I've plotted on my summer 2000 map, the Soviets have an overwhelming manpower and AFV advantage on the Berlin-Cottbus axis. There are only a couple of British divisions in their way, and most of them are situated well behind the front lines (west of Berlin).
http://maps.google.com/maps/ms?ie=UT...1,9.854736&z=7
Also, the Soviets have an army in western Byelorussia (the 9th Guards Tank Army) with 9000 men and 48 tanks which could be used to support offensive operations in Poland. This leaves the 1st Byelorussian Army HQ (86th AAB & 7th Guards Tank Army w/ 5900 men and 2 tanks) to perform internal security duties in Byelorussia and deal with the mutinous 3rd GTD.