Originally Posted by
Dante_Purgatory
The only similarity with 3 is CT and the 'Hero of Light'-gear, afaik. Maybe I missed something, but I see them more like nods to different FF's for fanservice's sake.
As for other FF installments, I haven't really seen that much similarities. But then again, I might have missed some things. Feel free to enlighten me ;)
As far as I am concerned, I would be pretty disappointed if SE just re-used some parts of another FF's mythology for their 'main-story' just because they like re-using stuff...