The insurgents lose "scores". Islam, due in large part to their polygamous marital arrangements, is burdened with a surfeit of angry young males with neither productive nor reproductive potential. Their society needs to dispose of these men, to redress the destabilizing imbalance between eligible males and females.
Killing scores, hundreds, thousands even, will neither dampen the fervor, nor sober the outlook, of the surviving Islamofascists.
Killing them by the bushel in their Iraqi hellholes is still ultimately "swatting flies". The actions of the remaining flies are not affected by our swatting a portion of them, and no matter how many you swat, you haven't made a dent in the total population.
The U.S. cannot win any contest of attrition with Iraqi insurgents. Its not a game we should be playing.
If the Sunni's would rather wage war than to participate politically in a Government dominated by Shiites, then we should let the Sunni's and Shiites have it out, or proceed directly to partition. U.S. soldiers and Marines are too valuable to be expended keeping Iraqi's from fighting their own civil war.