1UP Editor, Andrew Pfister explains in his blog post why they are late with the review of Mortal Kombat Armageddon for Wii:
Because Midway didn't send the game to us for review. Apparently there were some bruised egos over there. Or a singular bruised ego. We're not exactly sure. Someone felt left out when Milky talked about top-tier fighting games in some preview a while back and neglected to mention MK, and EGM didn't score previous Mortal Kombat games as high as some of our competitors did. So Midway has decided to not send us review code at all as some sort of punishment. The message? "Give us better scores, or we won't support you."