Just read this --- not sure why you aren't getting this through your tiny skull, but Fed is again MUCH superior to Nadal on grass and hardcourt, and please don't give me their H2H again which has continued to narrow over the last decade or so. If Nadal was superior, he'd have more hardcourt and grass titles. Fed completely dwarfs him in that area
If you even read the first sentence I simply copy and pasted what someone else wrote. Secondly, all you had to do was read the "overall" points at the top to see the summary, which clearly concludes Fed is a better grass and hardcourt player than Nadal (which is quite sad that it even needs to be said in the first place considering this shouldn't be a shock to anyone)
How is someone superior with a 1 - 3 H2H deficit at hardcourt slams?
Let's take into consideration also that Nadal's game had matured to the point of being able to win slams outside of RG from 2008 onwards (Nadal turned 22 years old that year). Let's look at Fed's hardcourt slam wins before and after that point:
2003 - 2007: 7 slams (AO 2004, 2006, 2007 & USO 2004, 2005, 2006 and 2007)
2008 - 2022: 4 slams (AO 2010, 2017, 2018 & USO 2008)
Fed won 63% of his slams before Nadal's game had matured on hardcourts at slam level. Of the four won after that, Nadal would have been the favourite at the 2010 AO had he not succumbed to injury and Djokovic would have been heavily favoured to win in 2018 had he not had injury issues. In other words, he vultured two of the other four slams he won on hardcourts.
Let's leave the issue of vulturing aside though and look at a Nadal / Federer comparison:
From 2008 - present Fed has won four HC slams (I chose that time period for reasons previously stated). During this time period Federer was aged 27 - 41.
From 2013 - present Nadal has won four HC slams. During this period Nadal was aged 27 - 36 (comparing against Fed in the same age bracket).
Four titles each and Nadal leads the H2H 3 - 1. For the last time no, Fed is not superior to Nadal on hardcourts. He benefited from a vacuum in power between 2003 and 2007 and then played third wheel to Djokovic / Nadal since.