It is absolutely much better having played the courses, whether in real golf or on WGT, it makes you feel that you understand what they are going through.
I have been lucky enough to play in real golf a number of the courses that have hosted Opens, St Andrews, Troon, Carnoustie, Turnberry and you can relate to the players. Same at the US Open, I have played around a dozen of the US Open courses and it is great to watch with that knowledge. WGT has made it so many of the other courses that I have not played are 'familiar' to me.