I agree with your analysis that Obama is worse than Carter, because he is effecting (destroying) so many countries.
One warning that we can take from Carter’s time, is that the last year will tempt aggressors to try their luck, before a stronger President might come to power. In Carter’s last year Ayatollah Khomeni conducted mass executions of his opposition, and the Soviets invaded Afghanistan. China attacked Vietnam, and communists began a civil war against the Government of El Salvador.
A lot of bad actors will calculate that a lame duck Obama will be their best chance for a while - and he will probably try to make a final push to flip as many countries as he can.
The world will suffer the effects of Obama’s Presidency for a long time to come.
Good points... wish I could disagree.