Yes, he is unique. As is everybody else.
Uniqueness is not a reason to give someone a prize, achievement is.
And from where I'm sitting the only thing that has changed is that the American President is no longer making a fool of himself on the international stage and hasn't made the rest of the world wonder if he still has all his marbles.
But to give him a prize for that belies the people that have in some cases paid with their lives for achieving their goals, and then to be awarded their 'prize' 30 years after the fact.
There should be some honour in being awarded a prize, this is more like an incentive to keep going.