I think PlayStation is better than the XBox based on one point. When you purchase the PlayStation it is your and it works, when you purchase the XBox you must also purchase an XBox live membership to access anything online through the XBox and I don't believe there is a valid reason for the system to be that way.
Yes, playstation is better than xbox, because playstation has DDR on it. Playstation can also play DVDs, and an owner does not need a separate console for it. The biggest problem with Playstation is that it tends to overheat. But for everything that it can do, it is better to have a playstation because it is more versatile.