The difference is that now that Saddam is gone Iraq can do something about the human rights issues. As Sinner said in the text he quoted, Iraqis are beginning to despise the remanents of the old regime and you're going to see more and more of their attention focused on getting rid of them.
To prove that the US has lost this war, you'll have to prove that a) there are in fact more terrorists then there were before
and they're more capable of attacking us, b) our military has been weakened, to do that you'll have to do more than cite recruitment statistics, c) show exactly how our image is hurting us in the eyes of other nations, ignoring general sentiment and citing actual economic and political evidence, and d) convince everyone that peace between Iraq and Iran is bad.
It's okay if you can't, as long as you just keep pounding the message we'll beleive you.
Look, everybody is getting what they wanted. US forces are going to leave Iraq on a rather short timetable, Iraq gets the chance to prove they're grown up enough to manage their own nation democratically, and the fact that no WMD's were found there is actually a good thing. The middle east is a safer place now because, no matter what you say, a madman with killer weapons and an entire nation at his command would be an order of magnitude more dangerous than even a thousand madmen with carbombs and machine guns.