It seems to me like they were ALL victorious.
Emma believed, got Henry, and showed the town who Regina really was.
Gold got Belle, and of course, manipulated everyone so he had the biggest advantage in the end, and brought magic back. (Who knows why, though.)
Regina may have lost for about 2 minutes, since everyone remembered and knew who she was, but now, she has magic, and it’s just like the situation in FTL: no one really likes her, they know she’s bad, but she’s the powerful evil queen. Emphasis on powerful, since not everyone can control magic. Unless they can…