John,
Oh, so you think facts are essential to arguing points on this discussion group? Not just uninformed opinions? Well, that changes EVERYTHING!
For the record, I am one of those "uninformed" DMN raters that Ronald muses about. I have played most decent courses in Texas, designed a few, and played 70 of the world top 100 or so (depends on the magazine, changes in the rankings, etc.) I think I am qualified. I stayed off it for years, thinking it was a conflict of interest, and now make sure I vote my own courses pretty low. I only went on after the editors explained that almost everyone in the biz had at least one course they might favor, but they trust it doesn't generally happen, and can usually tell when it does.
As to PT, I also presume that its overall ambiance and exclusivity has something to do with the rating, but don't know. Its a great place and a very good golf course. It's certainly up there, and whether it should be 4th purely on the golf course, I am not sure, but its close.