They are building it in Japan about as much as they are building the theatre right now in MK. Sure, they actually physically broke some ground for 6 weeks, but we've now been 6 months without any construction crew on site.
881 days from announcement to groundbreaking for Pandora. 763 for announcement to groundbreaking for SNW in Japan. But then again groundbreaking is nothing but a ceremonial timepoint, with the two projects seemingly having diverged for reasons unbeknownst... but I have many theories, most of them good.