As two of the biggest pop stars of the late 1990s and early 2000s, Britney Spears and Christina Aguilera were often pitted against each other by the media and fans alike. Both rose to fame around the same time and had similar music styles, but their paths diverged in many ways. While both artists have had successful careers, the comparisons and contrasts between them have led to a seemingly endless debate over who is the better artist. Let's take a closer look at some of the factors that...