Don't get me wrong. If you ask me who will i favor in the next 2 year slam i will absolutely say Novak. But pretty much every player have a down in his game after a very strong season, which Djokovic is having now. And he is 34. You don't know when exactly father time will start knocking on the door. At this age it could happen overnight.
Federer at 36 in 2017 was looking absolutely unstoppable, and that no one will take the crown from him. Yet after Wimbledon he may have relaxed way too much, and in the next month dropped his level big time. Then he come back strong for Shanghai and Basel, and then F**** at WTA.
And next year while he won AO 2018, his level was terrible.
That fast can thing change in tennis.
Still i see a lot of people are fancy Nadal on USO, but i don't see him having much chance against even 80% version of Djokovic.
Nadal serve and return is absolutely best on Clay. And USO changed the surfaces i'm not wrong and its faster now.
But still some people saying silly things as Djoko or anyone else will rule for the next 5-8 years is ridiculous.
Who do you wanna Djoko face at the finals at Wimbledon if he is to get in there?