The TRUE requirements are everything that blizzard says, plus the game, which in turn requires the money to pay for it, which in turn requires either 1) a job, which requires you be over age 16 in most places, or 2) have very generous parents who aren't afraid of using a credit card over the internet, and are willing to pay a monthly fee for you to play an online game...
2) continued: which in turn requires that your parents have been brought up to be open minded, and very generous, which requires that their parents be the same and on through the generations (I know it stops at some point, but who's counting?) Also, this requires that your parents have either 1) good enough credit to have a credit card, or 2) a checking acount that comes with a debit card that has one of the major credit card labels on it. This requires that your parents have a job (or some form of income that is otherwise not work), which requires that they be of legal age to have a job (which if you're playing WoW, I hope they are twice that at least), which in turn requires that they be at least ambitious enough to get more than a minimum wage job because if they only had a minimum wage job they probably would have a full budget just keeping everyone else paid off while keeping you and themselves alive at the same time. This requires that they care about you enough to feed you. This requires that either 1) they are good people, or 2) you aren't an evil little *stuff*.
There are way too many more requirements to list, but I covered the basics I hope. Those are the MINIMUM requirements to run WoW effectively.