How about This

How about just wait until the game gets released?  I don't think it's fair to call the game simply a port when it is adding on two new characters.  Not to mention new content.  Fully voice dialogue, etc.  There's no arguing that this is basically a remake of So2 but it's also adding new features.  Therefore, I don't think it's a port but it's not the same game either.  It's somewhere in between.  It's a remake with add ons.  If Yamagishi wants the remakes to feel like two totally different games, then why don't we treat them as such until we find out otherwise.  This is even MORE TRUE for First Departure.  How on earth can First Departure be a direct port of Star Ocean when it has the Star Ocean 2 battle engine?  According to these entries and some other news I've read, it seems that both of the remakes have a fair amount of new things.  Being a tri-ace fan since 1998, I'd advise you probably just wait.  This isn't just like comparing Valkyrie Profile and Valkyrie Profile: Lenneth.  This is much different.