Okay, here you go.
FF1 released in america.
FF2 and 3 NOT released in America.
FF4 and 6 released in America, but renamed 2 and 3 to avoid confusion.
FF5 NOT released in America.(This is, of course, before 6 was released)
They decided to screw the "American Numbering System," and made 7...well, 7, which caused more confusion had they not changed 4 and 6.
