In all honesty people hype FF7-X way to much. X was crap all together "Hey look guys I'm the dream of a dream, if that makes sense at all lulz!" and the only one of those 4 that I would even enjoy playing again is IX, too bad I can't save **** on my PS2 with my PS1 mem card because it corrupts all the files (Thanks Sony, you make me go out and find a ****ing PS1 mem card for nothing.)
I really don't see why people would compare it to Mass Effect either. Of course its not going to be a Mass Effect, its a completely different game with a completely different setting, plot, background, and developer.