It's weird, I still get the impression Nadal is more pumped to play Federer than to play Djok. I think it would hurt Nadal to lose to Federer more than it would hurt to lose to Djok. Especially in a slam final. I think Federer is priority number one for Nadal, still.
I don't get your logic. Nadal's only problem right now is Djokovic. Rafa simply owns Fed... why would it hurt more to lose to Fed lol?
How would you feel when you lose to the same player 7 times in a row? not fun.