Maybe the mistake they are talking about is that we dont have enough troops to police Iraq. Bush didn't put enough troops in Iraq and that is why this war is not a joy ride.
Instead of the fact that we are in Iraq. Of course what they are failing to realize is the fact that the more troops we have over there the more targets.
About the same amount of soldiers have died in the War so far as usually die just practicing during peace times. The only difference. We are killing enemies that have been trying to kill us for decades.