That is good i think. Because Nadal hasn't won Madrid masters since 2005.
On the other hand Roger won more Madrid masters titles than nadal.
Nadal is not confident in madrid masters may be because of high altitude. Tournament is played 800 meters above sea level.
Madrid in it's current clay installment has only been played ONCE and that was last year.
Nadal has never won all three masters tournaments in the same year before but that's been because of scheduling. This year, after skipping Barcelona, Nadal has had a week of rest in between each clay tournament and besides, he was barely pushed in Monte Carlo and Rome - particularly not at MC where he hardly broke a sweat.
Nadal is winning Madrid barring injuries or freak occurences.