Probably Rafa would had won 5 or 6 slams more than Roger Federer. Roger had more opportunities so 2 Grand slams like Autralia and US Open are strong advantage to him. Rafa just had 1/4 slams of Clay. Rafa had more and better records than him, better stadistics, etc. Since last year a ot of people say Rafa is the best tennis player ever and I agree.