I believe that publishers need to pay Microsoft for the patch testing ( http://thenextweb.com/microsoft/2012/02/16/microsofts-40000-per-xbox-patch-explains-why-updates-are-slow-to-roll-out/ ). Not sure if this is still the case, but it is a pretty big expense. And Namco may not care about the updates as much as FROM does in Japan. I'm kinda surprised that FROM doesn't use server-based stat files so they can tweak without a title update.