I won’t say he’s worse than Carter. Carter is largely responsible for the existence of the Islamic Republic of Iran and everything that followed including the Soviet invasion of Afghanistan which led to AQ and Bin Laden, the Iran Iraq War, the formation of Hezbollah and Hamas, the entire modern Jihadist movement really. All because Carter did nothing throughout 79 and 80(even after they took our hostages). It will be very tough for Obama to reach that level.
Of course, Carter’s ineptness and failures also brought us Reagan. If Carter was even halfway decent Reagan never would have been President. So, there is that benefit.
Lets hope Obama brings us a similar turnaround.
The history of Obama isn’t written yet. We don’t know all of what he’s done or will do and how it will reverberate through time.
Iran is easily one of Carter’s larger disasters, but I think when he was voted out people might have been thinking more along the lines of energy and the economy at the time.
Given the utter stupidity of things Obama has done that we know about, my guess is that over the next two years it won’t be difficult for Obama to top even Carter considering they are both cut from nearly the same cloth.