Loads of differences in DW to 40k. The rules are really streamlined and easy to learn. I posted this somehwere else on BoLS, but here it is again: [url]http://queencityguard.com/index.php/2012/05/22/first-look-dust-warfare[/url]
It is the antithesis of cluttered rules. I think I state it in that article, but I'm fairly certain the 'acutal rules' account for only about 40 pages.