No, I definitely do not think that in 1987, on grass, that Connors is markedly better volleyer. Just how, exactly, do you think Lendl made 4 semis and 2 finals? I mean in terms of attributes. Don't tell me about his groundstrokes as in rallying. He doesn't rally on his serve because he comes in behind virtually every serve save that 84 Connors match. And how many of his opponents don't come in behind every serve.
So, rallying is mostly a non issue.
This is how I feel and many others seem to feel the same. Whether it be stroke mechanics or not, he just did not return as well on grass relative to other surfaces versus, for example, a Connors or an Agassi. So, is he making it that far mainly, or in large measure, due to the quality of his return? I don't think so, but I certainly think it could be argued with Agassi and Connors.
Again, how is he advancing so far so many years. Backcourt ground game is a non factor, return, at best, is not consistently outstanding. Serve? An excellent serve, but certainly not at the top of the sport. Is he serving people off the court like Goran? How mediocre can this guy be volleying and still advancing that far so many times?
You think he was going to play like Pernfors? So, after going on 3 years of s/v on every point, he is going to hardly come to the net? That's Pernfors. Hey, I am the one that speculated, I think with good cause, that Lendl's 1984 strategy was somewhat based on their Forest Hills love and love match. A match he came in a couple times, literally. Why give Connors a target, a way to end the points, at Wimbledon. That said, he lost that match. And he came in 45 times in that match. You think Pernfors came in 45 times in his 87 Connors match? Anyway, Lendl is not going to employ the same strategy that he lost with 3 years prior, Not, IMO.
My guess is Lendl would have played s/v at least a good amount of the time. Every serve is certainly open for debate, IMO. But I strongly see him doing it the clear, clear majority of his 1st serves. 2nd serve? I'm not nearly as convinced even though he did it against everyone else.