FedGR
Professional
No offense, but that comment (that Nadal is returning nearer the baseline because his legs are not the same) makes no logic. Nadal started returning near the baseline. Watch his Wimbledon 2006-2008 matches agaisnt Federer. He returned so near the baseline, if not even on the baseline itself. It is only that in recent years he got used to return far behind the baseline. After the Wimbledon 2019 SF, his coaching team told him to return nearer the baseline and he is gradually adapting to that new tactic, as we can clearly see in this tournament.
No offense taken. You struggle to give me any reasoning though why he was returning closer to the baseline. His coaching team told him so, but why?
Also, the fact that his legs are not the same is a fact. And fact based hypotheses do have logic independent to whether you agree with it or not.