Mmmmm... Marketing.

It's all about synergy. Final Fantasy XIII is a Playstation-related product (in Japan). Playstation is a Sony developed system. Sony also make the Bravia TV range. So what do you do? You get Final Fantasy XIII heroine Lightning to stand behind the latest Sony Bravia TV.

Subconsciously anyone who picks up that Sony TV, will instantly find themselves compelled to buy one of those sexy white PS3 Slim bundles too. Innit!