Figures in the infobox... once again 

I found this:

The Russian defeat of Berlin was inevitable for they outnumbered the Germans in men 5:1, guns 15:1, tanks 5:1 and planes 3:1. < that's a lot more (2x more men, and no German artillery in infobox at all).

Until recently the Russians had claimed that they lost 10,000 men during the battle for the Seelow Heights and 100,000 in Berlin. The actual figures are unknown. Yet no less than 30,000 Red Army soldiers were killed at Seelow, and the staggering figure of 600,000 killed in Berlin seems more plausible. Konev complained at one point that he was losing 1,000 men a day because Zhukov's artillery failed to shift fire when asked. Zhukov denied that allegation, stating that Konev was not using his troops intelligently. < now a HOLE DAMN LOT more (Wikipedia now claims only 81,000 Communist soldiers were killed in the whole operation, while even the OLD Soviet figures were appearently more 100,000 in the city alone). 

I'd like to note Battle of the Seelow Heights says 35,000 Communist soldiers were killed in this battle, which is even more than claimed by these sources.

Other source (modern Russian): The Battle of Berlin was a costly and bloody one with over 300,000 Soviet casualties. The number of German losses is unknown but roughly 480,000 were taken prisoner. (infobox says "134,000 captured")

Still another: However, it should be noted that the Soviet Union placed their own casualties as over 300,000 in the two weeks of fighting from the Oder to the collapse of Berlin.8This number included killed, wounded and missing. Interestingly, recent western sources place the total casualties suffered by the Soviets as even higher. (...) Although the exact estimate of Russian casualties during the battle for Berlin is unclear (infobox says "81,000 killed", etc - while everyone knows the Soviet numbers were completely unreliable.)

How about just not putting any figures, as are really just unknown? 

Also, Britannica about overall Soviet (unknown!) losses:

Available estimates of Soviet casualties vary widely. A Soviet officer  who served with the high command in Berlin and left the Soviet service in 1949 placed total military losses at 13,600,000 8,500,000 dead or missing in battle; 2,600,000 dead in prison camps; 2,500,000 died of woundsand estimated civilian casualties at 7,000,000. These figures have been widely accepted in Germany, but most U.S. compilations, based on Soviet  announcements, list 6,000,000 to 7,500,000 battle deaths. Calculations made on the basis of population distribution by age and sex in the 1959 U.S.S.R. census give some credence to the higher figures, for they seem to indicate losses of from 15,000,000 to 20,000,000 males of military age in World War II. The figures used here are a compromise estimate, not intended to obscure the fact that Soviet casualties are, in reality, unknown in the West.