So is murdering a thousand people less murder than two thousand? Or ten thousand murdered less murder than twenty thousand?
It’s no less murder. But fairly obviously murdering a larger number of people is worse than killing a smaller number.
The Communist murderers of 100M+ innocents have been forgotten, while low-level camp guards implicated even remotely in the approximately 12M killed by the Nazis are still being pursued.
Does that seem right to you?