Here's a graph for people who claim that there is no evidence supporting low-carb diets - they're clearly wrong.
Out of 57 randomized controlled trials, 29 show a significantly more weight loss on low carb. The number of studies showing significantly more weight loss on low-fat diets? 0 studies (zero).
Low carb is winning 29 - 0.
The graph above was made by Public Health Collaboration UK, "a charity dedicated to informing and implementing healthy decisions for better public health." Find links to all the studies at the PHC website.