Thank you for going into some detail on this. I think we have completely opposite view points. I put a lot of importance on style (all things being approximately equal). What I mean is that among great players, I will put more importance on style over minor advantages on other areas. I still rank Federer over Djokovic and Nadal, for example.
Tennis is not weightlifting, it is a skill sport, and it is supposed to be aesthetically pleasing. Djokovic and Sinner are consistent and very skilled players, but Federer and Alcaraz are on a completely different tier. I am not saying that Sinner and Djokovic are equals, or that Alcaraz and Federer are equals either.
Djokovic has the numbers advantage over Federer, but Federer overall is a greater player (and I feel his competition was stronger overall too), so for me Fed is greater.
As far as Alcaraz, not only is he a much more talented player than Sinner (who does a few things exceptionally well, but lacks the variety and inventiveness in his game that Alcaraz has), but also has double the amount of slams, slams on all surfaces, Channel Slam, has actually defeated Sinner en route to two of his slams (whereas Sinner's slam runs have been against underwhelming competition), etc. And he is almost 2 years younger. Maybe Sinner will pull ahead at some point, but I don't see how anyone can claim he is superior in any way at this point. Alcaraz is on a different level. What is scary is that Sinner has been pretty dominant on HC, and yet you could make an argument that Alcaraz's season is more impressive (at least regarding slams).
Stylistically Alcaraz will always be ahead of Sinner, though. They are completely different players. Not that Sinner isn't skilled, but his approach to tennis is not the same. Alcaraz is already legendary at 21, and I can't think of many players you can claim the same about.