I guess I can't imagine how two quotes could exist such that, if I could score them (on whatever attributes I find valuable in quote-space), they would come out equal enough that I would prefer one over the other based on the originator of the quote. I think this is due to the way I think of quotes, as unique things (i.e., apples and oranges. One could say, "I prefer fruit grown by a well-pedigreed gardener, all else being equal," and it would (possibly) be true for lots of people. But it doesn't really tell us what kind of fruit you like, assuming poorly-pedigreed gardeners have a non-zero chance of growing good fruit).

It could also be interpreted as a failure of my imagination, I'm sure.