Although it boasts the largest number of adherents worldwide, the Christian faith is not the only option on the table. There's Hinduism, Judaism, Islam, and then there are the "divides" within Christianity itself, namely between Protestants and Catholics - not to mention the newer American religions such as Mormonism and Jehovah's Witnesses. So what's the difference? And do the differences matter? And, most importantly, how does Christianity compare?