Tom
I think Wayne M has it basically right. But I think it's quite important that someone like you is asking the question in the first place. Here's why:
I think the more one knows and loves a subject, the more there exists the subtle tendency to overvalue that which is undoubtedly great.
At least, that's what I find for myself in the couple of areas I know well. That is, in the spirit of truth let's call it, I find that I need to guard against assigning greatness and meaning and purpose to every single note or lick played by my favourite clarinetist, or to every character or bit of dialogue from my favourite playwright. I've done it much too often in the past, and it's a very easy habit to fall into.
The irony, for lack of a better word, is that I only have to guard against this tendency in regards to those artists who have almost immediately (and then very consistently) demonstrated that they're the very best at what they do.
That's because it's only the recognition of their greatness that calls forth from me the effort to listen or read very deeply and carefully in the first place; and only with that recognition and effort comes the tendency to expect another example of greatness at every turn. And that expectation is a double-edged sword.
In other words, I'm aware that it's my very love for these artists that may blind me to their occasional missteps. And it's out of respect for these artists that I have to guard against doing them (or me, or truth) a disservice by ignoring or glossing over those missteps.
To get back to gca (sorry for the ramble): I'm someone who takes the GOLF Magazine list pretty much at face value, meaning that I assume each of the panelists has, to varying degrees, forgotten more about golf architecture than I'll never know. So, I assume that even if the rankings are not exactly in the right order, the 100 courses listed are probably very close to the 100 best courses around.
In that area, I don’t have to be careful, or fight the tendency I describe. Only a true gca expert can recognize all the wonderful and varied manifestations of talent; but then, only the true expert runs the risk of imagining/assigning greatness to even the most modest of achievements, and of trying to convince the masses of what he believes.
So, yes, I do think it's important that the gca experts check in every once in a while to try to see if they’re not overvaluing that which is undoubtedly great.
I think that, in the spirit of truth, the extra effort is worth it.
Peter