Obama is credited with having written two books. The first was brilliant, the second pedestrian. Many literary experts have concluded that the first book was written by Bill Ayers, who is recognized as an excellent writer. The second book, which is not so good, was apparently actually written by Obama, who appears to have little talent for writing. I would say that Obama is ahead of John Kennedy because I suspect that both Of Kennedy's books were written by someone else, possibly Ted Sorenson. Here is a discussion about the question of who wrote Obama's highly acclaimed autobiography.