6. Metal Gear Solid V: Ground Zeroes (Konami) < 280,000
7. NBA 2K14 (Take-Two Interactive)
8. Final Fantasy X/X-2 HD Remaster (Square Enix)
Kingdom Hearts HD 1.5 ReMIX sold in its first month around 273,000 units so it's highly likely that Kingdom Hearts once again beat Final Fantasy.
Also has to do with the fact that it was the final mix version of Kingdom Hearts where I'm sure there was plenty of people like me waiting 14 years or whatever to finally play it.