Interesting how four people voted for Jenson Button, and none of those four votes were mine... JB did great this season but in no way was he better than SV!
I don't think racing driver of the year has to be the 'best' or better. Different people put different criteria first according to which they determine 'their' driver of the year.
I understand that, I still think that SV has been better, even if he does have the best car, SV has been uber consistent over the course of the year, 11 wins, four 2nd places, one 3rd place, one 4th place finish and broken five F1 records, no-one comes close that sort of consistency this season and the gap to his team mate in an identical car is massive, 153 points with two races remaining!