Nadal. His higher topspin rates allow for greater margin and consistency across all surfaces, so you want see him dump a FH into the net or out of the court as often as Federer. Also, his IO/IIFH and FHDTL are hit with more ferocity. At their peaks, RF never hit FH as hard as RN. https://twitter.com/tennisnation/status/1280628184447438848

Not only that, but Nadal could do more with his higher spin. He could create the most insane width on a clay court and use it to construct space for FHDTL, something that Fed never did as ocnsistently as Rafa. In terms of the five modes of attack... pace, width, height are...

...how Rafa attacks using his FH, and arguably more ferocity than Roger. The other two forms of FH attack, time (taking time away etc) and length/depth, Federer is better at. So overall, Rafa is a slightly better FH attacker than Roger, and a significantly better FH defender too.

won't* in that first tweet.