You do not actually need to play MyCareer or Universe mode to get a good amount of VC. If you want to get a good amount of VC from Exhibition matches, perform different types of moves during matches, like submissions, dives, using tools, etc. Let your opponent pin you down and then get back up. Perform counter-attacks, signature moves, and finishers/OMG finishers. Basically, make the fight as exciting as possible to get as much VC as possible from the match. Just be careful not to repeat things more than required. Combine a lot of different things together, perform crazy moves, and you should get a five-star rating for the match and a good amount of VC.