Hi. I'm not sure what you're asking for here - the link shows the stats page for wishlist titles, and wishes do not include a rating. [Wishes often don't include a category, either, due to a long-running bug, but that's a different matter.] Can you be more specific about what you'd like to see?
I'll try to ask anyway. There is wishlist (http://www.bookcrossing.com/bookstats/wishlists), there is a list of the most traveling books (http://www.bookcrossing.com/bookstats/mosttraveled). Can I sort them into categories?
As Moem says, the stats-page wishlists can't be sorted by category.
Were you hoping to get a more interesting breakdown of the site-wide stats-lists, or did you want to find a way to sort actual wished-for-books by category? If the latter, check out the advanced booksearch page (the "search" option under the "books & people" tab); those search-results *can* be sorted - by location (via the wisher's profile-page state/country), category, and a couple of other things.