But XML does not map well to a database dump. A database is a set of sets of tuples. It is not generically hierarchical. It maps to a set of csv files say, as a transfer medium, but it is designed to be manipulated through relational calculus, which is not easily mapped to xslt.

You are using tools not because they map well to the problem space, but because they are the tools you have, which your customers want, and which you are familiar with, but that does not mean they are actually mapping well to the domain.