I disagree Ganton has no great holes -- I'd put 3,4,7, and 14 in with my favorites. John's word "subtlety" however may point to why these holes do not scream at the golfer.
For example, 7 has a clutch of bunkers on the inside of the dogleg which capture the golfer's attention -- but as much as anything else those bunkers serve to distract the golfer from the real issue: the bunker (and gorse) on the far side of the dogleg. And in a wind, you really do want to be in the proper position for approaching the green; there's a false front and the green falls away, the standard assortment of Ganton bunkers, and so you must really plan out the play of the hole. You might put failures down to those of execution, when the proper classification might be to the design of the hole.
For my money I think it is a fantastic test of decision-making, planning, and driving the ball. It's not a difficult walk, the wind will attack you from the four corners, and as for the "rhythm," I found it in all those decisions I had to make. It's not only you don't face the same shot off the tee from one hole to the next, it's how different those shots are.
For example, 1 tee = hit to left center in a left-to-right wind and hard as it's uphill; 2 tee = hit just over the inside of the gentle dogleg left but not too hard as it runs downhill and if you go out to the right you'll run out of room but if you stray left you've got gorse / rough problems; 3 tee = potential meltdown of brain's executive function.
Doesn't all this indicate an excellence of routing?
For me, this one's the Jane Austen or John Cheever of golf courses: there's a lot going on, if you'll only pay attention...
Mark