Is Gran Turismo a big system selling franchise?

[Reject]

Well as the franchise is so big, releasing in 2009 is not late at all for Sony. I mean FFXIII, GT5, GOW 3 and Killzone 2 all in one year spells for very nice sales. 360 has sold 5 million more than PS3 even though it was released a year before, that gap is not big at all.