The world ? Yes, the characters ? No just no.
Having seen many a character analysis, most of the characters in FF6 were very shallow (there were twice as many of them afterall), and even among leads like Terra, Locke, and Celes, the amount of actual character development was roughly equivalent to characters like Barrett, Tifa, and Aeris(/th) in FF7. Even as a silent protagonist, Cloud is at worst as developed a character as Terra. Later games have even further developed him.
In either game, people will use their imaginations to shape the characters, and minor characters will primarily be personality templates. Characters in the SNES days were generally not very fleshed out and didn't actually have many developing lines.
That aside, I'll try to do a tier list of sorts, but not necessarily in order of favorite to least.
FFT, FF6, FF7, FF9, Dissidia, Crisis Core (also Xenogears, Super Mario RPG, ChronoTrigger)
FF10, FFX-2, FF5, FF4, FF13, FF11
FF1, FF3, FF8, FFTA, Dirge of Cerberus
FF12, FF2, FFTA2 (also ChronoCross)
Sadly I have yet to get around to titles like Star Ocean and Vagrant Story, among others.
Ok, now we're going to get slash fiction of Wint x Kachi somehere... rule 34 and all...
Never confuse your inference as the listener for an implication of the speaker.
Good games are subjective like good food is subjective. You're not going to seriously tell me that there's not a psychological basis for why pizza is great and lutefisk is revolting. The thing about subjectivity is that, as subjects go, humans actually have a great deal in common.