Greatest Tennis Player of All Time - Rafael Nadal?

[Waterloo]

Rafael "Superman" Nadal
Roger "Former King" Federer
Pete "Wimbledon" Sampras
John "Temparamental Artist" McEnroe
Jimmy "Retriever Dog" Connors
Rod "Grand Slammer" Laver
Bjorn "Ice Man" Borg
Martina "Maltova" Navaratilova
Steffi "Fraulein Forehand" Graf

Let me put my thoughts

Considering Women's section in isolation ( too much of power gap between men & women in Tennis ).
I wud vote for Martina . Her overall record is stupendous. Be it singles or doubles, mixed doubles .

Men's section :

All the listed names are all time greats but they had their own share of shortcomings other than Rod Laver . They havent won a slam ( except Fed & Nadal ). Considering this (-)ative aspect, the final list is down to just 2 :

Roger
Rafa

Both are role models & legends. As of now, Roger leads in terms of titles and qualifies by virtue of having won French open. However, I doubt whether he cud have won it last year if Rafa had been there across. His victories against Rafa have not been convincing ( thumping ) of late and he would have been a bunny @ last year's final.
Now Nadal Having won US open too now, he definitely has to be held in the highest grade . He has beaten all the respective court specialists handsomely and bound to reach Fed's awesome slam records. I cud forsee atleast another 3 french open + 1 Wimbledon + 2 US + 3 Australian which will enable him to surpass Fed.
So my conclusion is conclusive ( we should not talk about grace , charm etc here )