Certainly the most egregious omission is Laval's Blue Course. Combined with Park Jr's Green Course, the answer to the question 'what is Canada's best 36-hole facility,' is easily answered. Which modern course in Canada is better? Well, maybe none of them.
As for the question re National... it's hard to explain the drop but it's hardly a course I would enjoy playing every day. I wonder if more international raters, golfers who have seen Fazio's best across the United States, just didn't see The Nash as anything special.
Comparing Cherry Hill and Lookout.. I preferred Lookout. Let's go play both again!