Ran
You made me go back to my post, as I've already forgotten what I wrote a few days ago! Just another senior moment.....
Nevertheless
1. Wholeness. A “course.” This is to say something that flows, naturally and seamlessly, over the land. Tee to green to tee to green, etc.
Halved--there are no demonstrably more holistic venues in the world that I know of
2. WYSIWYG. What you see is what you get. Holes which, even if partially blind, make it clear, from their topography and the placement of hazards and the green, what the risks and rewards are of shots of varying intensity across varying angles.
Halved again. Any diferences aren't worth disputing
3. Subtle deceptions. Within the context of 2 above, the addition of little tricks which reward experience, require you to think, and punish you if you do not.
I'll give this to Dornoch, but as I've played it 300+ times and Portmarnock only twice, I could easily be swayed by another 298+ trips out by the that view over the Hill of Howth...
4. Diversity. A mixture of shot values required, in terms of clubs to be used and the shape of the shots to be executed with those clubs.
Halved again. Both world class.
5. Greens which accommodate both the aerial game and the ground game.
Another slight edge to Dornoch, based on my memory.
6. Greens which give higher rewards to properly executed “aerial” shots, with commensurately higher risk.
Another halve. The better player will play relatively better than the average player on each course.
7. “Lines of charm” closely linked to hazards. Rough which borders the “fast lane” off the tee. Greenside bunkers which eat into the putting surface.
Another halve. Don't remember Portmarnock well enough to compare.
8. A balance between the use of bunkers and swales and rough and natural watercourses as “hazards.”
A halve again. Both have GREAT chipping/pitching/bump and run/putting options.
9. Greens which have at least 4 good-excellent pin positions, and which allow alternate ways of approaching possible pins.
A halve--again don't know Portmarnock well enough to compare, but I assume this is so!
10. Gut feel. You can’t always define a 3*** course, but you know one when you see one.
Portmarnock wins this one. More obviously great than Dornoch. In fact, if the Burghfield House Hotel had been located in Malahide rather than Dornoch I might now have very different ideas as to course greatness and my preferences.....