I was an original Cheney chick too -- I had that great photo of the two of them dressed casually, smiling, at Bush's ranch as my puter wallpaper for a long time!
On CNN they're dissecting the "facts". Taking issue with Cheney's adding Iraqi losses into the equation on Iraq.
So, let's look at it this way. Say, 6 months from now, Iraqi forces are trained and doing most of the fighting. Let's say 20 Iraqis killed in one month. Coalition forces lose 3 soldiers in the same month, 2 Americans and 1 Brit. According to Edwards' formula, we would still have to say Americans made up 70% of "coalition casualties".
Their formula leaves no room for lessening the burden as Iraqi forces take over.