maybe he just was overconfident?
I would think that if Duffee would have KO'd Overeem it would be good for business. They'd immediately have a new star in Duffee, and the Reem's stock wouldn't drop too much. He would still be a huge star in Japan.
No way would it of been good for SF and Co, SF would of had to give him a title shot which would of screwed up the Tourney thats going on. and it would of weakened there position against the UFC and they have invested so much in that division to be in a position to challenge the UFC this year it just seems crazy they would take that risk.
Its would of given the UFC more ammo than Werdum beating Fedor did.