This isn't comparing apples and oranges; this is comparing apples and peacocks.
From Obama's speech announcing the death of Osama:
And so shortly after taking office, I directed Leon Panetta, the director of the CIA, to make the killing or capture of bin Laden the top priority of our war against al Qaeda, even as we continued our broader efforts to disrupt, dismantle, and defeat his network.
Then, last August, after years of painstaking work by our intelligence community, I was briefed on a possible lead to bin Laden. It was far from certain, and it took many months to run this thread to ground. I met repeatedly with my national security team as we developed more information about the possibility that we had located bin Laden hiding within a compound deep inside of Pakistan. And finally, last week, I determined that we had enough intelligence to take action, and authorized an operation to get Osama bin Laden and bring him to justice.
Today, at my direction, the United States launched a targeted operation against that compound in Abbottabad, Pakistan. A small team of Americans carried out the operation with extraordinary courage and capability. No Americans were harmed. They took care to avoid civilian casualties. After a firefight, they killed Osama bin Laden and took custody of his body.
And Bush's speech announcing the capture of Saddam Hussein:
The success of yesterday's mission is a tribute to our men and women now serving in Iraq. The operation was based on the superb work of intelligence analysts who found the dictator's footprints in a vast country. The operation was carried out with skill and precision by a brave fighting force. Our servicemen and women and our coalition allies have faced many dangers in the hunt for members of the fallen regime, and in their effort to bring hope and freedom to the Iraqi people. Their work continues, and so do the risks. Today, on behalf of the nation, I thank the members of our Armed Forces and I congratulate 'em.
Of course Iraq went on to become a quagmire, whereas Afghanistan...