The players today, regardless of racquet technology and strings, hit the ball in a fundamentally different way, especially off the fh side. I think the results are significantly superior, so we don't agree there. They generate way more racquet head speed, which results in way more pace and spin. Aside from Borg and Vilas and likely a few others, no one from the 70's was hitting with that kind of spin, which also includes varying amounts of side spin, and Vilas and Borg weren't hitting with the same pace as today's players, even taking the racquets and strings into consideration. While I never mentioned raw athletic ability, today's players are generally bigger. Modern technique allows these bigger, stronger athletes to take bigger cuts at the ball and still have it land in. Regarding all the other stuff like eye/hand coordination, foot speed, etc. - of course the best players from years past are equal to today's players. If these players played in the same eras with the same techniques, then things would be interesting. And players from adjacent eras are similar enough to be competitive. But techniques have advanced IMO. Taking players of similar talent, one using modern technique and one using 70's technique, the modern player wins. Again, all just my opinion.