Macro partitioning

Low-carbohydrate diets (LCD) and low-fat diets (LFD) produce statistically similar long-term weight loss, although LCDs yield faster initial loss.

If you are choosing between low-carb and low-fat for weight loss, expect similar results after one year. Low-carb might help you drop weight faster in the first few months, but low-fat is often easier to sustain socially and culturally. Choose the one you can stick to long-term, as the long-term weight loss difference is negligible.