Manny by decision, but more competive than you may think. I think Ken was too tough for Manny to stop, but I think Pac was a bit too quick and dynamic for Ken to win.
Buchanan has a hell of a lot more mobility than JMM and while he's not a power puncher like him, he was a highly accurate counter puncher and had a great jab and much more difficult to hurt... Good fight, but I'd give him a real shot... Could see a decision either way