Right, because you tend to be quite meatheaded about the subject. You have the mentality of a frat boy spotting someone and shouting "no excuses!"
We all come here to discuss, and there will always be a certain amount of "what if's" and and moaning about the ones that got away, but you really take it to a new level. I know you are somehow deeply offended by Nadal and are forever rewriting history whereby he only won so much due to fitness and the underachievement of his betters, like Medvedev and Berrettini. No one takes it to the extremes that you do, I think it's fair to say. Perhaps you think that's a lack of imagination on the part of the rest of us, that we can't stretch the definition of "collapse," for example, or help you reinvent a better world wherein Rafa only the modest amount of clay titles he's actually entitled to. Can't help you, sorry. As to the simile above, I have no idea what that means, but hey, I'm a meathead.
I would have to disagree vehemently that Del Potro is more of a disappointment than Nalbandian, but they both underachieved. it appears to be an Argentine thing!
I didn't say that JMDP was more of a 'disappointment' than Nalbandian, only that delPo is the greater tragedy. King David underachieved for various reasons, and his career was shortened by injury, but del Potro really has had his career hindered in the extreme due to injuries, basically since right after he won the USO in 2009.
Grass was good for him, and he certainly should not have lost to Gnatal in 2018 being up 2 sets to 1. But the point is that hardcourts were best for him.
No disagreement that HC is his best surface. Only pointing out that he'd had deep runs in Majors on both clay and grass. (What he "should" have done v. Nadal at Wimbledon, we'll just have to disagree on. See above.)
Whose game was more electrifying when they were on top of it? I think it was Delpo going away. That's not to say Murray wasn't good but it is to say that he was boring as compared to Delpo.
I'd say this is really a matter of taste. You did say "top" of their game, and you're talking about 2 very great players, with very different styles. I like the variety of Murray's game, and the intelligence with which he employs it. And I would say he has more "flair." However, Juan Martín can hit the ball so hard and flat, daring the net and the lines, and it can be really breathtaking. Like a high-wire act. I saw JMDP v. Monaco on Armstrong (so, close proximity) in 2009, the year he won, and before any wrist injuries. I really have never seen harder hitting up close.
I do think his demeanor/mindset had a lot to do with underachieving. He always acted like he was about to die in between points and I think this carried over into sloppy play.
Since he's always done that, I'm not sure I buy that...I think he's regressed because of the injuries, rather than that his on-court demeanor has held him back, but the point isn't without merit.