There’s so much here...but I don’t have the time.
You didn’t define strength. Grip strength? Aerobic endurance? Upper body/core power? Sprint explosiveness? CP system maintenance? Lactate tolerance/clearance?
“Strength”.
I didn’t oversimplify your argument. Claiming he is somehow “off the charts” in some dimension you don’t define isn’t evidence.
Supps can make you better than you were, in some dimensions. Comparing him to his comp doesn’t work, because tennis is multivariate, unlike the 100m or olympic lifting or the thon. You would need to compare him to an earlier yet mature version of himself, and then take into account training effects. You have done neither.
He is not demonstrably better than anyone. Yes he has a phenomenal record at the French, but he is not the tennis Ubermensch that Borg was. Yes he looks thicker, more muscular, and appears to have good ball control, from a platform that is stable in different attitudes—but these are benefits no matter what the surface. Yes clay balls are heavier, and yes a racquet that gives more control gives less power, which needs to be compensated for with muscles—and it is that, along with his bigger legs giving better performance on slippery clay, that permit his bulk to be used to advantage on that surface, and on that surface only. I would have the same advantages over Federer and Djokovic, only my lower-than-Nadal level of initial skill would mean that I would still get beaten.
He has never destroyed Djokovic like this before, which suggests that Djokovic played weakly, rather than Nadal playing super strongly.
As far as bulk goes, Federer has never even seen a weight room in his life, in any serious way. Have you ever stood next to him? He’s a rake. Djokovic is in-between.
Long matches are all about energy management, and recovery between points, and hydration. The top 3 are all very good at this, but smaller guys will gas out first in such a system because they are using more of what they have available, as long as the bigger guy plays the right kind of game.
I played exactly like Nadal. Nothing was getting past me if I played ok, even if I was behind the baseline. I still play like that, and love to wear down opponents over time. When you van get everything, you find your opponent unready and out of position many times, and that is from where the points come.
As long as you can step up and return serve, you will eventually get breaks this way. Clay is your special friend because the lag exacerbates your opponent’s bad positioning and unreadiness. Power works because there can be no hesitation, there has to be commitment when your opponent moves, so both hard shots, inside-outs, and those shots where you wait as long as you can to contact the ball are especially successful on clay. Also it saps energy of weaker players faster, unless they mail in points and play only baseline rallies and ignore hard-to-reach shots.
There is much that you don’t talk about. The fact that he just destroyed Djokovic at the French is not good evidence of doping.