LA Studio is some kind of TV centric content - not games:
http://www.microsoft-careers.com/job/Los-Angeles-Exec-Director-of-Creative-Dev-IEB-Microsoft-Studios-LA-(822509)-Job-CA-90001/2373436/
http://www.microsoft-careers.com/job/Los-Angeles-Senior-PM-IEB-Microsoft-Studios-LA-(819830)-Job-CA-90001/2324516/