There is no doubt that Saddam Hussein had been responsible for the great number of deaths of Iraqi people, both at wars and as a result of brutal repressions. Although precise figures are hard to come up with, one speaks about "hundreds of thousands," perhaps even million of dead.
Let’s do some math. Saddam had ruled Iraq for 30 years, resulting "on average" in about 30 thousand victims per year.
Recent report by the Iraqi Health Ministry puts the number of Iraqi civilians and police officers died violently in 2006 at 23,000. This is lower than estimated 28,000 deaths mentioned in a United Nation’s report. This is much lower than the 150,000 since 2003 as calculated by the Iraqi Health Minister Ali Hussein al-Shamari. This is way much lower than 600,000 Iraqis died from violence since the invasion as published in October by the Lancet.
Regardless of what the real numbers are, one thing is clear: the American invasion of Iraq is inflicting the damage on the Iraqi people on a scale comparable to that of Saddam Hussein.