Mr.Lob
G.O.A.T.
Ivan Lendl reached 19 finals and won 8 of them. He, based on your logic, would have 8 gold medals and 11 silver medals. McEnroe reached 11 finals and won 7 of them. He would have 7 gold medals and 4 silver medals.
I fail to see why you go on with this, if you want to consider both singles and doubles then I would say McEnroe is superior. But just in singles, I would say it's a fair case that Lendl edges out McEnroe significantly.
Winning Wimbledon would be equal to winning a gold in the Olympics. I think we can all agree to that. Winning the lowly ranked Australian Open, for that time period, would be equal to winning a bronze in the Olympics. The French would equal a silver. Now add them up. Macks on top.