The best estimates of individuals killed by coalition forces is 35,000. The British study cannot certify what percentage of those individuals were killed by terrorist or coalition forces. This stands in contrast to the bogus Lancet study from 2003 estimating 100,000 deaths.
Saddam Hussein and his henchmen killed roughly 1.5 million people. This breaks down to 300-800 thousand in genodical extermination of kurds and shias. One million people were killed in the Iran/Iraq war initiated by Saddam.