They are as formidable and as entangled a trio as tennis has ever witnessed as silly as it is to get into generational comparisons, it's fair to say that the great three of Borg, McEnroe and Connors (26 combined Slams) are on the run, in their flowing hair and short-shorts.
To be fair, Apple too is quick with its own spec comparisons, but because Cupertino controls the entire platform from hardware to OS to APIs to cloud and other services, they have a much greater playing field on which to innovate.