You make it to the point, El Dude. That's how I feel about this "race." While Djokovic will more than likely win more slams, I think Nadal will win enough slams to keep off Djokovic. Also, there's always part of me that Federer wins one more slam...
I agree about the number 22 for the slams leader but that will be tough for both Djokovic and Nadal.
Basically, Djokovic has to win 5 slams after the age of 33 and Nadal has to win 3 more slams. No matter what anyone says, Djokovic will win more slams but he will have to take every single mental and physical abilities he has on his body. As we seen in the final, he will have more of those in the finals in where he will feel nervous, physically tired, mentally walkabouts and etc...Yes, he was able to maneuver this time around, however he might not able to do that again next time around especially as he gets older and the nextgen gets more and more experience.
It is similar to Nadal but to a lesser number (3 < 5) of course. Can he managed his body and emotions when the time comes? Also, can he snatch another slam off-Clay, no?