"To quote a headline about the study "Girls are magic, boys get power."
Magic IS power. It can be as devastating as a gun, but it can also be tremendously subtle. A gun isn't that versatile. Now granted, some of the magic presented in the context of girls' toys is useless fluff, but some of it is world-shaking stuff. Just because something isn't always ostentatious ... don't assume that means it isn't powerful.