Cultures in EB2 will probably be the same as they are in EB1. However 'culture' as religion may be a different grouping. For example, if 'Hellenistic' is one of the groups then it would include the cultures 'Western Greek', 'Eastern Greek', and 'Roman'. Things like this would allow the culture settings and 'relgious' 'cultures' to be different from eachother.

The team hasn't really made any decisions about this, though.