This is possible for sure, but there's no ready-to-use solution at the moment.
Some time ago I started writing a script to accomplish this (also see http://ez.no/community/forum/general/wordpress_migration ). It's not finished yet, so maybe we can work on it together? You can contact me at kristof.coomans@telenet.be
maybe we can do it ... 1st if we export the wp data to csv or xml with title, excper, article ... where to insert it to the ezp DB ... ezp DB look hard to track it ^^