I agree. I doubt seriously that any of them really mean it. I can think of no conceivable scenario in which the only way we could end this war is by intentionally killing over 1,000,000,000 people.
It's not like they have the capability to annhilate us and we have to do it to them first.
Japan worked because we crushed their cultural illusions with two atomic bombs, defeated their emporer and bent him to our will, and put on an overwhelming display of conventional might on VJ Day.
The Japanese who mattered knew that resistance was not only futile but would be fatal. A defeat of corresponding proportions will be necessary to bring reason to the islamic backwaters.