Nice catch...
Over in the nav tree on the left, yep, Japan is displaying full results...what it might be doing is finding every top-level category that has either an "exclusives" subcategory or an "exclusive" within it and is mistakenly displaying all of the contents that category.
It does appear to be narrowing down the # of results from the full database (5952 for Antron's search vs. 11789 for the full db). Also, countries/categories that don't have any exclusives in the db aren't being displayed. For example, Brazil didn't turn up in your search, which is expected.
Looking at Japan, it's giving full results - 3694 results; as is Europe - 1074 results.
So, it might be what I said before (finding exclusive and displaying full contents), or there's just something up with Japan and Europe.
MIKE
engledogg