i read this really great theory online, about how FFVIII and FFIII are almost completely related, and there are many points that prove it.
I won't take ANY credit for it at all, becuase i only read it and i feel like sharing it.
here's the site, it's worth reading: http://www.rpgamer.com/editor/2005/q2/050205gm.html
if anybody else agree's with the theory and has any other points besides the ones in the site, please share those points.
and, if you wanna discruss or argue with it, you're all welcome too. personally i think it works well.