He will have head-to-head, most slams, only one with multiple of each slam, most Masters 1000s. Pretty much every important measure of greatness.
Interesting to see if Connors can hold career titles and matches won or if Federer can limp home to grab those records. Otherwise, Djokovic is like Jim Brown breaking into the secondary and the rest of the ATP are the 180 lb safeties and cornerbacks trying to come up and make the tackle