The issue isn't whether the US military can kick open a lot of doors, or keep them shut. Indeed, the question is often how not to be as ruthless as the military could conceivably be, which is especially necessary in a war zone where most of the inhabitants are innocent civilians.
The issue is whether the fighting is a means to a realizable end. There is no point in continuing to fight if there is no hope that the suppressing fire will be used by the Iraqis to move into position, to reconcile and build their own nation.
The general cannot speak to this. Above his pay grade. Way above.
So today is just a sideshow, as far as I am concerned.