No offense intended.
I believe you misinterpreted my comment. I wasn't suggesting that the individual Russian soldiers were inflating their own numbers. I have no way of knowing that, nor would anyone who was not present at the time.
I was simply stating that "official" numbers were whatever Stalin's Soviet propaganda machine (written about in countless books) wanted them to be.
For what purpose? Just like all other propaganda...to exert influence over people, to boost domestic morale, erode the enemy's morale, further the myth of one race's superiority over another etc...
These tactics during wartime have existed throughout history and the Soviets are not alone by any means.