Lately the Xbox has been missing out when it comes to extra content, not sure if it's Microsoft's fault of the fact that Xbox discs have a smaller capacity than blu rays, but it's happening more often. Dead Space 2 for PS3, for example, had an HD version of Dead Space Extraction.
Also: I honestly can't think of an Xbox exclusive character that would fit with a fighting game like Mortal Kombat.
Also: I honestly can't think of an Xbox exclusive character that would fit with a fighting game like Mortal Kombat.