Pat, I think this time, it is you who is missing the point of my post:)
I could not agree MORE with the first half of your post. You are right on that even when you have a wide fairway, under the hands of a good golf course architect, the shot value changes dramatically (I would argue the degree of change in shot value between one area of the DZ and another is what makes great courses great).
And you are again correct that just hitting the green does not mean that you have hit a good shot. A well designed greens have small areas of target zone related to the pin position that is MUCH SMALLER than the green itself.
But can't you see the parallel between the two points above? Just like not all DZ's are not the same, not all targets on greens are the same. You have CONSISTENT shot values from tee to DZ AND DZ to green!!! However, if the fairways are too narrow, DZ no longer exists, you are praying just to HIT the fairway. And my point is that to have the consistency, if you have an average green size of 24 yards wide, you should have fairways that are 40 to 50 yards wide. But even with that fairway width, your DZ may be only 10 yards wide, just like your ideal placement on the green may be only 4 or 5 yards wide.
You are also correct that 7 iron distance dispersion is probably more consistent than the length dispersion for a putt (relative to the length of the putt). But you are dismissing the amount of errors that are introduced with lie, wind, and contact (thin or fat shots with a 7 iron have much more severe distance effect than toe or heel hits on a putter). I would still argue that the difficulties are consistent.
You asked, "Could you name five (5) courses with 40-60 yard wide fairways with big greens ?"
I am still working on your other challenge, but this one, I can answer fairly easily:)
1. Chambers Bay
2. The Plantation Course at Kapalua
3. Rustic Canyon
4. Bandon Trails
5. Pacific Dunes