Carter's team did manage to bring the hostages home, although as it happened on Reagan's watch Reagan largely got the credit.
Uh, wasn't that the whole arms-for-hostages thing? If we are going to criticize a president in regards to the hostage situation, I'd say that's the larger criticism.
I will agree that Carter made a much better ex-president than president, however. I have been astounded at his ability to do what the administrations in charge could not do. And I am including Clinton's admin. in this.
Carter is a great people-person, and seems to respect other cultures far better than most presidents and people.