One likely cause of these games popping up high on this games list is simply that they're incomplete records, so they're appearing with other pages with 'TBD' values for release dates, age ratings and so on. Browsing through the lower end of the list lots of retro titles have full details, so this seems like a handful of pages that have been started and then forgotten by a Nintendo staffer doing some data entry.
I think I'd lean towards this considering different EU regions have different games listed. Licensed games like Batman Begins and Chronicles of Narnia pretty much never get re-released this late. The rights are way too complicated. EA would not have the Batman license anymore.
They're probably actual database listings for when they were on Gamecube.
EDIT: Yep. Click on random pages and you can find several old Nintendo games like Banjo-Kazooie and Perfect Dark Game Boy.