If you read the first post by Leon in http://www.canadavisa.com/canada-immigration-discussion-board/spousal-sponsorship-t46995.0.html you can find an explanation about the differences between the two processing types (inland and outland). People generally compare the total processing time of an outland application with the processing time for the first stage of an inland application, because after inland first stage approval the applicant can apply for an open work permit and health care.
You can find the processing times here: http://www.cic.gc.ca/english/information/times/perm-fc.asp