Overall career achievments make a better player not individual h2h records.
Fed losing to Nadal doesn;t make him a lesser player than Nadal. If that was the case then Nadal would be a lesser player than Djokovic who aboslutely demolished peak Nadal 7-0, 7-0. Or Nadal would be a lesser player then guys like Mueller, Brown on grass as they have multiple winning records against him Nadal over multiple matches so are not a fluke (yes other players have winning records vs nadal but 1 of matches are not statistical).
Can you actually state the specific reason why Nadal is a better player then Davednko on hard courts (or overall even as Davednko leads the overall h2h too and it is a 11 match sample so not a fluke) when Davednko has won every single match they have played on hard courts bar one? Ahhh you say it is because Nadal has a better record vs the field than davednko and a better career? Well Fed has a better career than Nadal... More slams, more WTF, more weeks no 1, more YE no 1, more AO, WIMB, USO etc and a whole enclopedia of better records. On his negatives he has less masters and less FO..... if you disagree then feel free to agree with why Mueller, Brown and Davdenko are better players than Nadal since one on one vs nadal they are all better players with better records. Im pretty sure Kyrigos will retire with a leading h2h vs nadal too