I think the SRG sports some decent tanks. Not a match for ours, but not necessarily in city.
I think Baghdad will go "similar" to Basra. Maybe less intense, but certainly for a longer time. I doubt we'll "do anything sudden" or "large" once we are at the city gates. Mostly help the people get things under control, and root out Saddam's gang of thugs.
Speaking of Basra, you've got to hand it to the British soldiers. They've been having a tough time down there. I sometimes forget them in my prayers, so I'm making a specific point to include them right now.