The purpose of a good ranking is to be able to compare teams or countries over time on the basis of their sporting strength. If you know the sporting strength, you can predict the expected match outcomes. If you know the sporting strength, you can calculate the competitive balance of a competition. The competitive strength and the competitive balance enables you to prognose the commercial benefits of teams or countries.
To have a fair and reliable measure of sporting strength and competitive balance, Hypercube developed the Euro Club Index for football in 2007. This index shows the sporting strength of teams or countries. We have not only used the system for European football, but also for football in America (see case Concacaf here) and we are working on a new ranking for international volleyball (see case FIVB here).