Maybe he is just happy about winning the WTF and still very emotional about the season, but I cant' agree with the fact that 2012 was better than 2011 for Djokovic as he said.
In 2012 he won almost everything (3 slams +++) and he was even better than Nadal on clay (bar the FO). He just missed the last 3 months because of an injury.
In 2011 he was the best player, but not by far.
I think 2011 was a better year for him