I find it extremely hilarious the Japanese trailer is on the International page but STILL isn't on the Japanese page xD
Well, the PR divisions in North America and Europe want to sort of "keep up" with Japan more regularly now. It's also why we saw Final Fantasy XIII-2 domestic PR and media within a few days of Famitsu and Jump.
Expect this to be a regular thing with high-profile Square-Enix games going forward.