First of all, don’t call them my comrades. The people I’d consider comrades in that area, the anarchists, were betrayed and slaughtered by the USSR. A tankie wouldn’t call the USSR “state capitalist” as I did.
Secondly, if you’re referring to the victims as counted by the black book of communism, you know they counted hypothetical babies that might have otherwise been born in their victim tally? And they also counted Nazi combatants? It’s an absolutely shameful work of revisionism, and the only reason it exists is to put smoke up as cover for the crimes of western capitalist imperialism.
And thirdly, are you saying that by “Soviet territory” they were referring to all former eastern bloc countries in both their past and present forms? What an absolutely wild thing to say. That is bizarre. I have never heard that construction before and it’s clearly you reaching for something you can say to not be just simply wrong.
They were saying “in the realm of death count of the Soviets”, which is also bizarre but at least it’s a reasonable grammatical construction.