Im not sure, FFXII is definately a great game, but I find it hard to put it ahead of some particular FF's. FFXII had a great battle system, probably the best one yet, a story which I liked ( not sure about others ) and alot of other sidequest and other optional stuff to do. But on the other hand, its soundtrack wasnt that good, the characters felt underdeveloped, the story was good but it went too slow for my liking, leaving out blue magic and the uninspiring artwork.

Its probably 4th or 5th on the list, but that still doesnt mean I dont consider it the best RPG on the PS2.