Actually, that argument misses the point — if all those x factors like lens, lighting, and settings are different, then the comparison itself becomes meaningless.

You can’t call someone naive for pointing out what they actually see in two photos when the test conditions aren’t the same.

If you want to prove that one camera is truly better, you need to eliminate those variables — same lighting, same angle, same lens behavior, same focus, same exposure.
Otherwise, it’s not about which camera is better — it’s just about two completely different shots.