I don't understand the problem. You get to play the game as soon as it's released. Regular boxes only contain a disk and manual, so it's not like regular customers get anything you get - apart from some cardboard.
Backers are better off than collector's edition buyers too, since backers can play right away while those who have preordered through amazon and similar will have to wait for their boxes to arrive in the mail before they can use the included codes.
