The difference is that these younger players won most of the Slams in that period (with the remaining three were taken by Rosewall). Also, Nastase dominated the Masters.
In the current era, all but 4 Slams were won by Djokodal, mostly Djokovic.
Other than 1970, Rosewall did not dominate like Djokovic & Federer, though.
Yes, and his runs were huge and unexpected upsets, especially after Newk sent him packing with ease in USO 1973. He did not win a single title in 1974, though.
Laver immediately lost his grip in Slams after 1969. His dominance in the WCT circuit extended to 1971 and arguably mid-1972, though.
I agree with everything that you say. Although, I feel that it is worth mentioning that Rosewall turned 36 years old in 1970. The same age that Djokovic is right now.
Despite being in his early 30s, Rod Laver was arguably the best player of 1970.
Unlike in 1969, he chose to pursue prize money at the expense of winning grand slam titles. And given what the players made back in those days, one can hardly blame him for doing that.
I do feel that the field from 1968-73 was considerably stronger than let's say 2018-2024. There were younger players that were consistently winning grand slam titles. It wasn't a complete two man show.
However, the younger players still did not fair particularly well against Rod Laver or Ken Rosewall. Even despite their massive age advantage.
If you look at the succeeding generation of Connors, Borg, and McEnroe they were clearly a much stronger group.
Borg was dominant against Laver and Connors was dominant against Rosewall.