Good points. Well considering he is mentally more fragile and still has the records, this surely means his skills are far greater compared to Nadal and Sampras, to be able to compensate for his frailty that much.Sure, but this is not just another H2H. This is a H2H vs. an opponent who is fast closing the slam count. IOW, this H2H directly influences slam count of both guys.
Look at this way: shouldn't the better guy win a higher percentage of the matches overall ? That's how it usually is.
Sure, it doesn't, but it does make you think.
FWIW, I don't think he's weak. I never said that either. IMO, he's a little more fragile compared to those guys.