In fairness Bush was fairly succesful except in Iraq which spilled over into everything else. He made a big mistake in how he handled Iraq, but what else did he do that was so bad? Obama has a few years to mess up like that too
Off the top of my head?
Record deficit spending.
Failure to actaully get Bin Lauden.
Failure to focus on Afghanistan.
The Patriot act.
Warrantless wiretapping.
Torture.
Appointing Rumsfeld's college buddy head of FEMA rather than someone qualified.
Weapons of mass distruction (that's not execution of Iraq).
Of Putin "I looked into his eyes and saw he was a good man".
North Korea's Nuclear program.
Removed the ability of the EPA to force cleanup of emissions (they managed to do it once between when they were given that power late in Clinton's administration, and when Bush took it away... in Tampa).
A failure to re-regulate banks as new debt-backed securities hit the markets.
Domestic economic policy.
A failure to stem the incentives for outsourcing as the economy turned down.
There's more, but that should give an idea that it's more than just Iraq.
Obama followed the same economic policies as Bush in trying to bring the economy back too. Don't get me wrong they are very different people with very different goals. Still not being someone else is not a goal or accomplishment. Bringing Iran to no longer pursue nuclear weapons would be an achievement.
I don't agree with the bailouts as they were done. I do recognize that Obama was an advocate of them.