restock of a shoe doesn't mean all of the retailers would get them. not all country gets restocks and if they do only select retailers get them.
check the prod date of te kobe 8 and lbj x christmas that released on the same day. it should be a few months ahead of their respective release dates...
If that nike jp website posted that then its hard to say it sells fake j's.
Regarding the prod date, if its released on dec 2012 i think it should have a prod date slightly early on the release date and not the date of the 2011 release.