Whatever it is, J. Cole just has it. He can't make a bad song. (Knock on Wood. No pun intended on that either) My opinion at least, I haven't heard one bad track from him since the come up, and even that is a stretch.
He is the best rapper doing it right now, and if you don't think so....I have no idea why you wouldn't, he is seriously on another level. These joints DIDNT MAKE THE ALBUM, like...what the hell, we as fans already know the album is going to be a classic then.