Prime, peak, ....Tomat-O, ToMAHto.
My point stands. Call it prime if you like, as exact peaks are never certain. But Nadal could beat Novak on every surface in slams in his surface primes. Novak could never do it on clay.
There is a reason the slam H2H is 10-6 to Rafa. In the biggest matches (presumably the ones your life will be played for, not some random tour match), Nadal dominates Djokovic.
I enjoy living. I'll stick with my choice of Peak/Prime Rafa on any surface playing for my life. If you wanna take your chances on Novak, good luck to you.