I think you responded to the wrong argument.
Sounds like something out of Monty Python.
It has gotten out of control you may be right. It was initially stated MacArthur had fewer casualties than Ike. Some one posted listing Iwo Juma and stating or inferring Iwo Jima casualties were attributable to MacArtur. I merely pointed out that the over all commander for the Iwo Jima invasion was Nimitz. Earlier MacArthur and Nimitz under Roosevelt had divided up the Pacific Theater.