Do you mean more Soviets died fighting the war than Jews were rounded up and exterminated? Because that is not at all the same thing.

I was referring to the large numbers of Soviet POWs and civilians who were killed in concentration camps and in mass executions.

Its definitely worth remembering. But i think the reason its more particularly associated with Jews is it represented the culmination of thousands of years of persecution, ultimately resulting in an attempt to literally wipe them from the earth. That, and the fact that the Russian's managed to both resist and ultimately defeat the Nazi's, probably cements the more generalized view of what happened.