Don King's Prizefighter or Fight Night Round 4?

Don King's Prizefighter is said to be released shortly and it features many new options in the game. One interesting feature is full career mode in a documentary style with the ability to gain more popularity by doing comercials and other media related promotions outside the ring which could either help or hurt you inside the ring. Also is will feature unique fight mechanics, 40 current and legendary boxing champs, new venues and many other new and interesting features. This is set to come out for only the Xbox 360 and the Wii. Also announced recently is the Fight Night Round 4 which is expected to come out on the PS3 and Xbox 360 some time next year. This will feature, for the first time, "Iron" Mike Tyson and you have the ability to match him up against legends like Ali to see who is the greatest of all time. Which one of these are you most expecting to get and which do you think will be better?