I couldn't disagree more.
The Shah of Iran was the most loyal ally America ever had in the Middle East with the possible exception of Israel. Carter turned his back on the Shah and allowed Khomeini and the Islamofascists to take over Iran. This was the start of Hezbollah and all of the other anti-American jihadist groups.
When Ambassador William Sullivan sent Carter the "Thinking the Unthinkable" telegram in early November, 1978, a chain of events was set in motion where the United States systematically betrayed the Shah and paved the way for Khomeini to take power. We are still paying the price for this today.
That being said you made a great and valid argument.
He still remains #2 as worst Presidents in my book, but by the smallest of margins imaginable. Had he been reelected he may have indeed succeeded in garnering the #1 spot.