I belive on low carb there is an advantage to eating more calories, but since I've gotten closer to goal there is NO way I can eat 2000 calories a day and still lose like I did when I was 200 pounds. I now must eat between 10 and 12 x's my goal weight to see a loss.
IMO at the end of the day a calorie is still a calorie and while low carb may give you an advantage of an extra 200-300 calories a day, there is no way at 138 I could eat 2000 calories and an NOT GAIN weight low carb or not.