I'm not saying you were unclear, I'm saying I disagree with you. The winning side in a war always kills more people than the losing side. Are we supposed to be outraged by this inevitable fact of life?
War itself is a moral outrage. That is why we need to be sure of our justification before embarking on one. The 9/11 attacks certainly provided all the justification we needed to go to war with those who planned and ordered those attacks, and the nation which harbored them and refused to give them up.