Well, noone sane will argue that the course length matters and I am not aware from which tees Els and Singh played. What I know is that amateurs specializing in playing with hickory equipment kicked their butts easily.
I'd like to see the experiment that I described in my post to Kevin. We should see then what's the reality is.
They didn't kick their butts. It was a handicap event, they were getting strokes.
Therefore, if pros specialised with hickory equipment they will kick their butts easily.