Peak Djokovic would now thrash Nadal at FO. However, that form is who knows where right now. Could be that he's playing lesser quality and dipping his level in between slams... and then rises to the occasion. Kind of what we've seen lately with Djok and winning these last 3 slams.
I also think Nadal is susceptible to a shock loss at FO. Just based on age. He escaped so many times against players that shouldn't of been close.... but that might happen this year.