How funny, He's already number 18 on the presidential rankings list, certainly rising because of the Iranian resolution, and the gay marriage success. He has more than a year left to turn it up, so no matter how many times you call it failed the rest of the world sees it much differently.
Bottom line, no matter how many you times you call it a failed presidency, you're only a small minority of people who see it that way. It must suck to be you and watch the rest of the world lay praise at his feet.