It's hard to pick whether to respond to the OP, mocking Pabster's sychophantic post and having some fun by saying 'Saddam will not be judged by Pabster, or others, but by history years from now who can better see the longer term effects of his time in office', or whether to aaddress some of the misguided analysis of our other recent presidents.
One basic question in rating any president is deciding how much weight to give the president's qualities, versus how much to give what he got done - often affected by things he had no say over, from whether congress blocked his efforts, to his happening to be president when a big war started by someone else or other event he did not do occurred.
This especially effects Kennedy, who I think may have mastered the office more than anyone since at least FDR (through today). Also in discussing his accomplishements, you have to consider things like *avoiding* nuclear war, which is sort of invisible, as well as what he did that was more visible.
I think I'll just post my own rankings for the momemt, off the top of my head:
Eisenhower: 3.5
JFK: 5
LBJ: 3 (Viet Nam hugely bad, other policies hugely good)
Nixon: 1
Ford: 1
Reaqan: 0.5 (hello, era of the wealthy dominating our politics and economy, huge debt, a return to the covert and illegal support for evil forces around the world)
Bush 41: 1
Clinton: 3.5 (nothing nearly as bad or good as the other 3, LBJ, but very good in balancing the budget, bad in pro-corporate policies, allowing sex scandal)
Bush 43: 0.2
Why 0.1 and not 0 for Bush 43? He could have been worse. He could have completely abandoned policies good for the public, instead of just reducing them. He could have attacked Iran. He could have actually started jailing any political dissidents like Michael Moore and Greg Palast. He could have come out even more strongly for torture. He could have become a public drunk again. He could have invaded Venezuela, instead of just covertly overthrowing their elected leader temporarily. And so on.
We need to save some room on the 0 to 5 scale below even Bush 43, because a president could be worse, though none of the other 42 has been worse.