Hi Patrick,
Although I didn't study Hazeltine quite as carefully as the other majors this year, I thought the golf course is quite good at creating a best line of attack. The fairways averaged 32-34 yards wide, narrow but still 30-40% wider than the typical U.S. Open venue. In order to get that best line of attack, you needed to be very accurate, plus or minus a few yards. Perhaps that's too much to ask, even from a top professional.
I would mildly disagree with Geoff Oglivy here, though he is one of my favorite analysts of such things. Ignoring the setup, Hazeltine National appears to reward the proper playing angle nicely.