You can't group women in the same category anymore. We're not merely just "women." We hold different titles, have different opinions, lead with various styles, and oppose each other's political beliefs as well as religions.
You can't even group minorities in the same category either for that matter. There is a growing spectrum of racial classes, social classes and environments that two Latins, two African-Americans, two Whites and two Middle Easterners sometimes cannot be measured in the slightest degree of similarity.
In July's issue of Fortune Magazine there is a section called "The Briefing" that says about two leading CEO's, Carly Fiorina and Meg Whitman that "...their approaches could not have been further apart."
If that's the case, then the Harvard Business Review may need to Move Forward in their quest to understand the lack of women in power. In their article on "Women and the Uneasy Embrace of Power," here Jeffrey Pfeffer may need to rethink the different styles, techniques, backgrounds and industries that make women rather unique to their contributions instead of continuing to classify women as one category.
Once we begin to recognize leaders as who they are rather than what title they hold, we will find more women, minorities and social classes that are "in power." We can find them when we recognize who they are, what they represent and what they stand for by getting to know them.