But you have to factor in most of Nadal/Federer's matches were played on clay which is Nadal's best surface and Federer's worst. And met the least amount of times on Federer's best environment(indoor). There's no distinct advantage for either Connors/Lendl since they were all great on hard court and carpet.
In the end, no one cares about H2H except only you and a few Nadal fans.
No, most of their matches were off clay.
I think people need to at least acknowledge the H2H, but thats just my opinion.
The most direct comparison between 2 players is when they are across the net from each other, playing on the same court, exact same conditions. Call me crazy, just my opinion.