George, I think it was Chip here that brought up an excellent point, but the 3's are nowhere near the quality of the par 4's & 5's at Oakmont, it is simple as that.
Then you have courses like Riviera with 4,6,16, hell even #10 is just as good as anything Oakmont has to offer. And this has been my argument in the past, Oakmont is an experience that needs all of its pieces working together. When you start to break it apart and compare it to other courses, it does not work out so well.