I'd back it up by saying Raynor had two major advantages over most of his contemporaries: 1) an extraordinary number of naturally blessed sites 2) a design style (and construction style) that allowed him to place his greens, tees, fairways just about any where he chose on a site...in other words as close to the best natural features as he wished.
I would add on to Tom's thought here and say that when he did not have a great site, his engineering skills kicked in and turned holes into very unique holes. See #14 at Yale, The Knoll.
Look at the comparison of Yale and Mountain Lake. Yale has wild terrain, ML mild. Yale today has 1 true fairway bunker (more in the original, but not many) because he used the terrain. Mountain Lake has many fairway bunkers due to the Florida terrain.
He did what he needed to do to make it interesting.
In general, I feel like most of his engineering skills were used at greensites rather than fairways where he used the terrain for the most part. He probably was NOT very artistic which is why in general (but not always), I prefer CB Mac involved courses over Raynor alone courses. CB Mac added a flair to the process.