If you have no time to debate, don't debate. Don't endlessly recycle the same crap.
PR's position as I understand it - and as I will continue to understand it until I see written material to the contrary - is that Iraqi workers should form an "anti-imperialist united front" with the "resistance" militias. The Mahdi Army is clearly one of the best organised, best funded and most powerful "resistance" militias in Iraq. So if you don't think your AIUF schema can apply to them then I suggest you need to rethink the tactic. And if your only - or primary, or fundamental - objection to the Mahdi Army is that they're not really part of the resistance then I suggest you need to rethink your analysis of Islamsim.
I'll let your suggestion that our "real" differences are over the fact that I support imperialist wars (while you oppose them) and that you want the working-class to overthrow imperialism (whereas I? Well, who knows what you're accusing me of here) speak for itself. I won't, as the phrase goes, dignify them with a response. If you think there's one scrap of evidence in anything I've written here to support any of those nonsensical claims, you've been paying even less attention than I thought.