Survey is not surprising. A lot of people are not informed and judge a president by the way he presents himself, that's it. You see it here also in the comments.
Who cares how many deaths are under his name? Who cares he was known as the 'drown king' because he bombed 7 countries? Do you think the families of the 100s of 1000s of dead people also think he was such a great guy?
https://www.nytimes.com/2016/05/15/u...nd-troops.html
"Mr. Obama [...] has now been at war longer than Mr. Bush, or any other American president."
One of the most succesful War Inc. employees ever
but but he smiles so friendly and is such a good public speaker!