Has anyone even tried to translate "Haeresis" yet? As far as I can tell it's another one of Square's "Oh, we're sorry, apparently nova is supposed to be novo and crystallis should be spelled with a u but we have our own special l337 latin dictionary" words, but the closest I found was
haereticum, meaning heretical(which, as it turns out, isn't so surprising if you think about it). It's very possible that they're just changing the name of Versus XIII, although I'm no...
Just because the brightness is slightly different on the PS3 it doesn't mean that its "inferior" or anything. You can make anything look better or worse by changing the brightness and contrast, and the PS3 and Xbox360 are probably outputting video at slightly different brightness/contrast levels. It's kinda like when you go to the store and the size 8 shoes of one brand fit you but they're way too small for another brand.
(Lol bad example)