Nadal has yet to play a full Federer 3.0 (1.0 being his prime, 2.0 being 2009-2013, and 3.0 being Fedberg Era). They played in Australia in January, but Federer was just starting up with Edberg and coming to the net.
Now he comfortably comes to the net more frequently, and I'd be interested to see how Nadal would do against this 33 yr old reborn Roger Federer. I don't think he'd be able to own Federer as much as he has the last few years, because Federer would be shortening the points more and more instead of trying to grind from the baseline like he's 23 years old.