But, wouldn't another extra five weeks after that help also?
I reminded of a quote somewhere that went along the lines of 'A project is never completed, just abandoned'. There will always be things to improve and fix, so you could develop forever and not have a complete/perfect game.
IMHO for a continuing project such as The Show it is the best approach to select a release date that works from a business perspective and release the best product you can at that release date.