The 7th gen proved that Japan sales are more of bonus to overall sales than anything. Despite the PS3 outselling 360 almost 8 to 1 there, it still took almost the entire generation for the PS3 to finally pass it overall. The PS4 needs to be at least 90% focused on western consumers, and Sony knows this. Japanese developers will make the games, and PS4 sales will pick up there as more and more projects release on the console.
Edit: My bad, didn't mean to double post.









