Couldn't resist making my own (mostly in response to Tricky) . . .
Standing Forehand -- 8 10
Running Forehand -- 10 9
I had to break up this category into Standing Forehand and Running Forehand not only because one hits one shot better than the other, but because these 2 shots are so different: one is more or less a standard rally shot, the other is turning a potential defensive shot into an offensive shot, often in pressure situations. Only a handful of points would separate these 2 players in (hypothetical) match. The key points and pressure situations would decide the match.
Backhand -- 7 9
Judging by the stroke itself, Federer would win the backhand score hands down, because his backhand has the variety and control. But what Sampras lacked in backhand technique he compensated for with strategy. He'd roll a high bouncing backhand making it difficult to be attacked or slice to prevent being dictated. How many times have we seen players try to exploit his backhand only to find out that not only would it holds up, but somehow they'd lose the point.
Serve -- 10 7
"Goes without saying." Agreed! Of all the stats and analysis we do, Sampras has an answer to it all: his serve. If he serves to his potential, that shot alone can keep him in the match. He may not break Federer's serve, but at least he won't lose his. And when the set goes to tie-break, you have to go with the Sampras' serve's chances.
Volley -- 10 6
Sampras's volley placement was impeccable! He could do more with a volley in a seemingly dire situation than most people could in a normal situation. Federer has firm hands at net, but volleying is by no means his bread and butter. If the list had a Half Volley category, it wouldn't be close.
Returns -- 7 10
It's abnormally tough to ace Federer. Federer can also deal with pace. But Sampras knew how to deal with ace machines too. His matches against Ivanisevic come to mind.
Speed and athleticism -- 10 8
Sampras was quite possible the best tennis athlete. The jumping smashes, dead-run running forehands, and improvisation that look "boringly" easy to the untrained eye, that's all attributed to his athleticism-making the extraordinary look ordinary.
Footwork -- 10 10
I don't see why this category is in here. I mean, I understand if "Agility" is in here, or "Balance", but "Footwork"? We should be concerned with the result of the footwork, not the prettiness of the footwork itself, no? That's why I rate these 2 the same. Both cover a lot of real estate, stay on balance, always in position, and very fast.
Defense -- 7 10
"Fed is among the top 2 or 3 defensive players in the game today. Sampras, in playing an all attack game, didn't play in such a way." I agree. But I do think his defense is consistently underrated. How do people think Sampras got himself into all those running forehands? He had to "defend" his opponensts' approach with the backhand and then "run" to the forehand for the pass.
Endurance -- 8 7
"Most surprising aspect of Sampras's game was his record in 5 set matches. Yes, due to his blood disorder, he'd tank a lot of low-reward games. But, because he knew how to conserve and pace himself, he could on occasion outlast legendary grinders like Agassi at their own game. I think Fed's fitness is better now, but I don't know how much above average you would call it."
Well said. I mean we've all seen matches when Sampras looks like he was going to die out there (literally puking and sobbing), and somehow, he just kept winning.
Mental Edge -- 10 7
I think I've seen Sampras lose his cool maybe like 5 times in his entire career. And whenever that happened, he came back with ice cold firing of 3 or 4 consecutive service winners. Federer is one cool customer, but in the rare occasion when things don't go his way, you're more apt to see him yelling at himself or the umpire.
Consistent Pressure -- 9 10
"Sampras was about making you crack. Federer was about completely breaking you. You don't want to play either."
Haha well said. I would chime in by saying:
"Playing Sampras, you despair because you never see the light at the end of the tunnel. Playing Federer, you don't have time to despair because you're too busy being attacked by hundreds of bats."
Big Points -- 10 10
The big points manifest themselves ,more often, in different ways. Sampras played the big points extremely well on his serve. 0-40 is routinely the situation where he played for real and the opponent is left wondering what the heck just happened? Federer doesn't seem to tighten up much. His strokes are as free on the big points as they are all the time. And tie-break pressure? I've never seen a better tie-break player than Sampras.
Circus Shots -- 8 10
"Fed is the king of the circus shot." Agreed.
Strategy -- 8 9
Federer sometimes doesn't have a plan and just hits winners (I guess that is a plan). But he can figure out his opponent pretty quickly and adjust accordingly. Sampras didn't change his game plan much, but then again, he didn't have to, because his strategy worked so well.
Sampras -132
Federer- 132
(ran the number 4 times)
BTW the list does not include: smash, approach, half-volley, and I'd point out that the list includes "defense" but does not include "offense".