Well, I'm not going to lie, I'd love to see this happen. Unfortunately, I don't think it will. It took 3 games in the Dragon Quest series and 5 in the Final Fantasy series before sales started to explode in Japan. With marketing and controlled quality, it may stand a chance to do so after a few sequels. (And given Sakaguchi, it could happen.) But the first one won't set the world ablaze.
However, there is this slim, but non-zero chance, that if everything falls right, it MIGHT be able to outsell FF13 in Japan only. Looking at Japanese sales, FF13 is the worst-selling mainline FF since FF4. (It needs 550K more just to reach 10-2, at which point it will be right behind 12.) If it can manage this, I do think it can cause quite a stir in Japan. I think this is the best shot it has at doing something major with the first game. And I do hope it does well and sticks around; I want to see something not from S-E challenge the FF empire.
-dunno001
-On a quest for the truly perfect game; I don't think it exists...
