Doesn't Djokovic have Davis Cup the week after WTF as well? Can't see him going all out in Paris when there's no break before WTF. Him defending Shanghai and WTF looks all too possible though.
Novak is the fittest on tour, NID. And he has no injuries after ditching gluten.
if you watch Rafa and Nole, you will put much more confidence in Novak, Rafa always seems too doubtful, too many things can break for him - serve, backhand, fitness, movement, going in deep defense mode. Novak has only to sort out his mental side which he is completely capable of doing.
if I had to bet my house I would go with Nole, and I am a huge Rafa fan.
Rafa is all set career and record wise, everything from now on is a bonus.
With his HC form this summer he has a legitimate chance for AO2014 but again it all depends on Novak. Rafa should focus primarily on FO2014. he played average tennis this year at the French. The year he loses the French will be the start of his decline, with the current players. Maybe Nole has a real chance for FO2014 but this time it depends on Nadal and the weather. If it is raining Nadal is lost.
ND has a chance for 3 of 4 next year. 4/4 is too much but you never know.