In the video game realm, there are really only two types of fighting games. First, you have the arcade fighters such as Street Fighter and Killer Instinct. Second, there are the sport simulation fighters such as Knockout Kings and the recently-released EA Sports UFC. While the former is geared towards unrealistic entertainment, the latter is geared to be more like real life competition.
Unfortunately for Electronic Arts, it's EA Sports UFC simply lacks the sort of knock-out punch that would make it a title contender.