I thought it looked suspect, too. I mean, I know a lot of the trash-talk/hate was upped to hype the fight, but once in the ring, it looked "off".
First, were Ken's takedowns; I know he's 50, but geeze, they were ugly, slow, and Kimbo did NOTHING to stop them.
Then, when Ken takes Kimbo's back and gets his arm under his chin, he never gets his other arm behind his head (and doesn't seem to TRY) to actually get a RNC. He almost does a Gable-grip rear choke. A guy like Shamrock knows better than that; especially against a guy like Kimbo.
The way it ended was more believable, though. Kimbo definitely connected and fighters chins go to crap when they get old, so the punches looked real.
All of it together (combined with Bellator's side-show like atmosphere) just seemed sketchy. I'm not crying foul, but I wouldn't be surprised if there was some dirty business.