They did base the figures on partial Nazi records, just saying. Why it matters is that Jewish deaths were fabricated and way over published by history while Polish, Russian and many other nations deaths (some also got gassed) have been forgotten, they were not small numbers either. That my friend is the true racism of it all. But by your logic, stating that a cake is a cake and not a cow makes me anti dairy. I hate no race so do not qualify, sorry.
This is all just at the hands of the ''evil'' side. Lets not forget how many innocent lives of MANY races were lost thnx to Churchill & co via bombing soft targets.