I would argue that Federer had a far easier field to compete against. His peers and main competitors in 2003-6 were Ferrero, Hewitt, Safin, Nalbandian, Roddick, who together had 6 slams! He won grand slam finals against the likes of Philippoussis, Baghdatis, Gonzalez, an ancient Agassi, while Novak’s 10/11 grand slams…