If they would rig the USO/AO draw for Djokovic instead for Fedal, so that it's not no.1 (as the last year) with Stan, Nishi, Murray ..., but Fedal, then, yep, Djokovic would rack up those pretty quickly.
But Djokovic is not the friend of KiAO and Nike as Fedal, no, so, if Nishi gets to no.4 before USO'15, Djokovic as no.1 will again get the pack of HC contenders Stan, Murray, Cilic, Stronga and co., whereas Fedal will get the pesky sworm of Ferrers, Berdychs and Simons of ATP world.
That is the main difference between being no.1 as Djokovic or as Fedal, instead of the easiest possible HC draw you get the hardest possible again and again.
Without those rigged HC draws Fedal wouldn't even made SF there at the next USO/AO, because Stan, Nishi and Cilic are too strong for them there, let alone Djokovic or Murray.
Djokovic could win ten more and finish with more slams than Federer. He never gets injured and doesn't look like he'll decline any time soon, and I can certainly see 36 year old Djokovic beating the likes of Dimitrov, Raonic and the other young kids to win slams.