It looks like they've not only killed Uday and Qusay, but their bodies are relatively intact. They may be body doubles, but it seems unlikely to me that there would be two doubles together. In any event, they should be able to confirm with DNA.

Intact bodies means they have pictures to distribute. It might even be useful, albeit barbaric (though not for that part of the world right now), to put the corpses on display in Baghdad, at least for a couple days, to suppress Elvis-like rumors, and really put the peoples' minds at ease.

Just one ace left in the deck...