So you figuratively whistle to your posse or freepers who have similar ideas to you so that you can bully those with dissenting views to yours into submission?
How boorish.
He doesn't seem to be stating that the Japanese and American atrocities were the same--if that is the case, then that is a bit off. Although the American military and government didn't exactly view the Japanese people all that kindly, they didn't sanction atrocities mentioned in this article. In contrast, the Unit 731 and experimentation on civilians in surgeries, transfusions, temperature effects, and biological warfare were definitely government sanctioned. And were done to people specifically selected who were civilians (in comparison to the nuclear bombings which because of their power were bound to kill civilians, though both Hiroshima and Nagasaki were military targets).
Yet on a soldier to soldier basis, there are bound to have been several American soldiers who did do atrocities to civilians in World War 2, even if such cases were much less than individual Japanese soldier atrocities.
That seems to be all that narby is stating, not that the United States in World War 2 did war crimes equal to those of Imperial Japan.