I wrote the same here like on DJoko-Gasquet thread, i believe Novak is in better position to end 2012 as No.1, after Canada he not only defended 1000 points, but Roger even lost few points here. Now he has to defend Cinci F and USO W - thats 2600 points, he can defend that i believe, if even not nothing horrible for him, because basically he can gain on every tournament after that, i mean he is playing Beijing this year, hope Shanghai too, and than Basel, Paris, WTF he can get there a lot of points. On other hand Roger played to many matches already this season and i am not sure if he can have another great indoor season, he can be more tired also competition from Nole-Murray can be much higher this season than last one for sure - add to that Tsonga, Delpo or Berdych in form and no way he will again win 3000 indoor points. Right now Nole is looking better, but i hope champion of USO will end the year as No.1. - among Nole-Roger, simply as that 4 slams and if Roger or Nole have 2 from 4 than deserve to be No.1 for that year.
Forget about "defending". In the Race Novak on the first place, he leads with something like 400 points. That really matters.