Death count under Marxism-Leninism:
Intention of killing political enemies, who were deemed a threat to building a worker-owned republic.
When they achieved their goal, they stopped. That’s a fact.
Was it ethical? No, but that’s not the point.
Death count under Nazism:
No intention of ending deaths until only white people are left, and only ~true~ white people, who weren’t gay, trans, autistic, impaired, or any other random arbitrary “bad” trait.
The point is death and worship of power.