It would be much better if those statistics compared apples to apples. Instead, they compare women and men that are not comparable. The reasons women are paid less is because they typically work fewer hours and they get pregnant (which requires a leave of absence). When equivalent groups of men and women are compared (same level of experience, education, dedication, etc), they're equal.
This is not to say there aren't instances of discrimination. There are and always will be, but those instances are statistically negligible. Articles like the one you linked are so misleading, they're borderline fraudulent.