Yawn, not another annoying H2H argument. Those have been done to death already. But I'll humor you.
H2H is really
not as all-important as people claim. Some even believe that just single match wins are on par with (or at least comparable to) Slam trophies themselves. It's not a very big deal by itself, and this is even before you dive into the glaring inconsistencies of the metric.
Let's have a look at Rafa "owning" Federer during his prime (these stats are copied from the official ATP site):
I count 5 hard court matches (which Federer leads 3-2), and two grass court matches (which Federer leads 2-0). Let's say that these are the surfaces that benefit Federer more. Now compared with that we have 7 matches on clay (which Nadal of course leads 6-1). Considering clay only appears for about 1/3 of the season, it's odd that the matches are slanted towards that surface.
With a bit of context, however, it makes sense. Nadal was still a developing player and he had not matured enough on hard courts until 2009 (and even so, he had a drop in form which prevented him from running into Federer after the AO; Let's say 2010). He was still at his clay peak (which spans about 10 years) so he made it up to Federer almost all the time. However, Federer was good enough on clay to even meet Nadal that many times and he was significantly better on every other surface. What I'm trying to say is that Nadal wasn't good enough to make the date on hard courts to balance out on clay.
So basically, Fed gets punished for being the better player by a landslide during that period. This is why I don't trust H2H that much. There are very noticeable holes.
If you think I'm using mental gymnastics to turn that H2H around and decide to dismiss it outright, just consider the question: If "baby" Nadal being 8-6 against peak Federer means a lot in the GOAT debate,
then why did that H2H not translate to better success in Slams and other big tournaments? The Slam tally from 2004 - 2007 was 11-3. That's not even close, and it's where I begin to ask some questions as to how the obviously weaker player managed to attain the match lead. It probably shouldn't be taken at face value.
Adjusted Slam counts are basically made-up stats used to pump up player resumes. The only Slam count that really matters in the big picture is the current one. And by the way, Slams at age 29 (because I can use arbitrary numbers too!):
Federer: 16
Nadal: 14
Djokovic: 12
Meh, I'm done here lol