^The above sort of illustrates the difference between title results and overall playing level. We can illustrate this further by imagining two different Slam results:
A: W, 1R, 1R, 1R
B: SF, SF, SF, SF
There's not a player in the world who would prefer the B results, but it implies better overall play - and is reflected by ATP points (3200 vs 2030).
All of which is to say that I do agree that there's a difference in the overall level of Rafa in 2019 vs 2022; Rafa was a better player in 2019 than 2022, but in some ways 2022 was more impressive. In a way, 2022 illustrates Rafa's greatness as much as any season in that he still managed to pull out two Slam titles. At the AO, he beat Medvedev at his very best, and a healthy Berrettini. At RG, he still managed to have a dominant tournament, despite a five-setter with FAA. He found a way.
You can also see this in his Elo Rating:
View attachment 10305
If you look closely, he reached his highest Elo in 2019 since early 2014, the tail-end of Rafa's prime. There is a downturn after that until the end of 2021, then spikes as he won the AO and RG, then a collapse after (mainly due to not playing). Rafa's always been up and down, and you can literally see the clay seasons as sharp peaks.