... strange thread. Firstly you are assuming they set the exact same timeline for all games. Which simply wouldn't be true.
Secondly why do you have Kingdom hearts 1 and 2 as 2005? They weren't both 2005. It's actually 2002 then 2005
FFX-2 and FFXIII-2 are only 8 years apart if you simply look at year of release and ignore the actual times. March 2003 to December 2011 is 8 years 9 months. If there was that time between Kh2 and Versus it would put versus in 2014
Why are Dissidia, FF3 DS, FF: tactics A2 and gyromancer all missing? Those were all developed by either division 1, 3 or 4.
I simply don't understand the logic at work here at all. So 8 years is somehow magical?
While the year of release for Versus is probably right and possibly ff15 (although that would be very early in the next gens life cycle) I don't understand why you are saying it will be so because 8 years is the norm. Surely you should be saying it will be so because it makes sense with what we know. Although if Versus launches that late it is in trouble, going up against Wii U games and possibly 720/PS4 games.
Final Fantasy 9 and FF 12 both did this. FF9 was released when PS2 was out, and FF12 released a few weeks before PS3, and after Xbox 360.