Well it's really close but I have to gave it to djokovic yes I know Federer has more USO titles but I think Djokovic can get to Federer by the end of his career. djokovic best years on hard courts 2011,2015 was a little better than Federer plus Djokovic players that he beat to win titles was better than Federer players that he beat. Also Djokovic had a better h2h vs Federer