When you think about it, the rebooted Star Trek was really just a buddy cop film. Except in space, with aliens… time travel and black holes. OK, so there are differences, but the key cornerstones of the buddy cop genre exist.
Two conflicting personalities who are forced to work together in order to overcome a foe who they would not have defeated on their own. Kirk and Spock are two such diametrically opposed personalities, so it makes perfect sense for Star Trek: The Video Game to really focus on these two characters in a title built from the ground up around this core third person co-op play.