This may be a restatement of some of the above in different terms; to me, it comes down to subtlety. The Japanese, especially, have taken the classic English ghost story and blended it with their culture (to some extent), and learned how to do the subtle, understated approach (which is really the best if you truly wish to give a feeling of the otherworldly); something which we in the West have largely forgotten how to do (or at least moved sharply away from) for some time; though there are classic examples such as Robert Wise's The Haunting (1962?) and the film version of The Uninvited, etc. or several of the films done under the auspices of Val Lewton in the 1940s. Character development is part of that, but largely it's attention to details, the finer brush-strokes, as it were, rather than great sweeping splashes of color. Each has its place, but where there's attention to detail within a structure it tends to hold up better over time. The other tends to be like candy floss -- it's really nice but dissolves quickly into nothing. Some of the Spanish films are showing this tendency, as well (including some Mexican cinema, such as The Devil's Backbone). I'm thinking especially of Alejandro Amenabar (sp?), etc. Just as, in the 80s, the Eastern writers had learned to do the English novel of manners much better than any contemporary Western writers that were being published, they've now surpassed us on the classic English ghost story type of tale, but blended it with certain cultural tropes of their own, and brought the subtexts into the present.