I think that ranking is pretty good. I may swap Reagan with JFK but both should be 1 or 2.
Reagan
JFK
Washington
Lincoln
Clinton
Bush I
Bush II
Obama
Carter (DEAD LAST)
I don't know anyone could rate him anywhere near the top. His bungling of the Bay of Pigs almost started WWIII with the Cuban Crisis. He did a pretty good job with that, but otherwise, nada.