Sadly, I think past events have shown NIS' fans are bad review proof.
To be fair, a lot of niche JRPGs get trashed in reviews by people who clearly just don't like JRPGs. I can somewhat understand where the whole "to heck with reviews" attitude comes from. For example, I remember seeing some pretty low scores for Atelier Meruru and yet it's my favorite game of the series (and probably one of my favorite PS3 RPGs). It's actually a very well made game, with much better balance and progression than the previous PS3 entries in the series, but for some people the moe aesthetic alone is enough reason to hate on it.
But then, Atelier Meruru got some pretty positive reviews too. There are certainly people who agree with me and really liked the game. Time and Eternity, on the other hand, has been universally panned and though I haven't played it myself I've watched enough gameplay vids to realize that it probably is genuine crap.
So I guess the lesson is that you have to be smart about reviews and find reviewers with similar tastes. I really do think that a lot of sites don't give smaller JRPGs a fair shake, or just have them reviewed by people who don't like the genre. I mean, I don't like sports games and if I had to review a sports game for some reason I would probably give it a lower score than somebody who enjoys the genre. But is that opinion even relevant to somebody who already knows they like sports games? I think a game should generally be reviewed by people who like the genre it's in and can compare it to similar games. But JRPGs seem to be too niche (or just too time-consuming, making them take longer to review) to always get that treatment.
But a lot of people who do
like these kind of games have seen games they like getting trashed on and the knee-jerk reaction is to just say to heck with reviewers...