Statistical analysis is amazingly insightful a posteriori when it helps explain and clarify how a match was lost/won; it is a priori analytics I'm worrying about, the kind that would tell players in fine detail what exactly the need to do and how, so they no longer need to think for themselves and use their intuition and adaptation capabilities.
Also, you're beating the dead fedal horse again, it's been dissected a ton of times and I'll just say Nadal failed to demonstrate peak dominance except on clay and Miami, which is enough.
We’re completely the same page with the first bit, the delicate difference between posteriori and priori.
It’s the second bit that current data is not satisfying enough for me.
All it can lead to discussing is who won and who lost on what surfaces, which you’ve just said.
Who won and who lost is not opinion, its fact.
I want to know these players better. I want to see how they evolved over their careers. I want to learn more about their tactical patterns.
I can watch a match on television or dozens of matches of Federer as is the case, but I’ll never know how many slices compared to topspin shots he’s goes for.
I’ll never really have the data to corroborate many of my opinions. Or arrive at enough new ones.
Somehow this is dissatisfying.