Federer and Djokovic are 2-0 in their round robin play! Will this be the year end final?

Well, I would love to see the two number #1 of this year face off against each other! Fed who wrestled the #1 ranking from Djoko only to lose it just recently. 

If this is indeed the final, who would you pick to win? All the Fed diehards would go crazy if he won!