I was listening to a lot of Paul McCartney's solo material lately. As successful as he was he just didn't have close to the success that the Beatles had as a band. It's also safe to say most Beatles fans would agree that his material wasn't up to the quality of the Beatles material either. McCartney just didn't have the same success without Lennon helping him. How much of the Beatles' success should be attributed to McCartney? How much of the Beatles' success should be attributed to Lennon?