Not a single person on Earth ever even wondered: Is Floyd as good as Roy? Do you understand how good Roy was? It's like when Jordan was in his prime and Shaq was coming up, and no one ever asked: Is Shaq as good as Jordan? That's how good Roy was, and that's how good peak Andy and Jamie Murray...
I cannot think of a reason why his shoulder issues would affect his forehand more than his serve.
Most of the lit on shoulder injuries in tennis focuses on overhead movements. Impingement obviously happens more overhead.
Perhaps some bicep tendon related stuff, what do I know.
People like so many different things, so the more concrete criteria below helps. One potential handful (among countless possible):
Isaacson's Einstein biography.
On the Origin of Species. Or do Hawking.
Bertie Russell's History of Western Philosophy. He doesn't hide his biases, but he's a...
A Shot in the Dark (1964), the second film about Inspector Clouseau. Crude, perhaps, but very funny. Peter Sellers mastered the art of slapstick buffoonery and married it with a curious air of effortless dignity.
So far it's a 50/50 race in the YouGov commissioned poll
This leads me to think that these gens may be more evenly matched than they appear on paper. Or in screen pixels, if you have not yet printed this thread to frame it over your bed.