Except for Islam, these specious arguments about members of one “faith” being MORE responsible for “murders” compared to members of other “faiths” never can compare to the number of murders committed by atheists and agnostics, murders in the name of........nothing except raw human malice and perversion.....nothing at all to do with any vision of “God”.
With the probable exception of Islam, you are correct.
Islam only because it is the only major faith that requires its followers to wage war on unbelievers until all submit. Even then the numbers are perhaps comparable only because they’ve had close on 1500 years to rack them up.
Godless “faiths” killed something upwards of 125 million in the 20th century alone.