The writer lost all credibility with me, putting Westbrook at #3.
You know who Westbrook would be if he didn't play with Durant? Monta Ellis. That's right, I said Monta Ellis. An unconscionable chucker, who brings little else to the game.
CP3 and Parker, I'll concede are, at this very moment, a slight notch above Rondo. They are close enough in playmaking ability, that their obviously better ability to score, gives them the edge. Irving probably will be better shortly, but isn't at moment. Rose, I'd put on par with Rondo. Rose is immensely better as a scorer, Rondo is immensely better as a play maker.
Ultimately, the writer seems to place higher value on scoring ability (as do many). From the PG position, I do not.