In race and gender patterns in the United States, men of color have traditionally been granted their rights in advance of women. Therefore, as long as this pattern continues, Barack Obama is better positioned than Hillary Clinton to beat John McCain, or any other white male Republican.
Patterns, whether grounded in fact or fiction, are by definition, deeply rooted and cyclical. Consider one odd pattern in American politics often referred to as Tecumsuh’s Curse: for 120 years, every president elected in a year ending in the numeral zero died in office, the majority from assassination. 
Patterns of race and gender are mixed inextricably into the mortar of society, right or wrong, and typically only change very gradually.
Free black men in post Revolutionary America could own land, but it was not until the 1850’s that states began passing women’s property rights legislation. 
Black men were allowed into the military before women. In 1870, James Webster Smith became the first African-American admitted to the United States Military Academy at West Point. Women were finally admitted, over a century later, in 1976.