He also somehow manages to best Obama by a 53-44 margin due to pulling 16% of Democrats, 57% of Independents, & 46% of Moderates. Americans seem to have forgotten why they disliked him and view him through nostalgic rose-colored glasses.
If that were true, he wouldn't be trailing Hillary by 13.
Of course you're going to look better in the eyes of the public when nobody talks about you besides the occasional puff piece and 2016 speculation. The fact that Hillary still leads him by double digits even after having been through the media buzzsaw in the past few months just makes it all the more impressive.
And despite the imagination of Free Republic, Obama won't be running for re-election in 2016, so who really cares?