Me personally I have mixed feelings. While I do feel that Canon ending is in the long run the better ending because of Kirie not being alone in her eternal suffering I also can't help but feel that the Nightmare Mode Ending (and to an extent the Photograph ending if we are going for realism) is more realistic and feels more natural. I mean I just feel that Mafuyu escaping with Miku would make more sense and would be the more likely thing of what a brother would do for thier sister. Granted Fatal Frame 3 explains that Mafuyu was very kind and would always help those who needed the most help but at the same time I couldn't help but feel sorry for Miku (not so much Mafuyu, I mean yes he's sympathetic and is a good enough character but (especially when compared to Mayu) he feels more like a plot device then an actual fleshed out character) because she's now all alone in the world with no other family, but I also felt proud and angry at Mafuyu.) Proud because I feel in the long run it was the more noble choice but angry because he's her big brother and is supposed to look out for her and leaving her all alone isn't looking out for her.)
So yeah what do you all think? Comment and share your opinions no matter how different from mine they may be!