Was asked to weigh in on this topic, and thought I would give my 2-cents considering I have been hearing a LOT about it.
MMA, unlike boxing, doesn't often work on the "undefeated mega-fight" system where there is a TON of money riding on 2 fighters overcoming certain fights to make the "big one" happen. Most fighters in MMA have records that would make them journeymen in boxing, even some of the biggest names in the sport. MMA doesn't have any title sanctioning bodies like boxing, there are no rival promoters on the opposing sides of 2 fighters, and the national promotions have virtually unlimited discretion in deciding who fights who, when, and for what title. There is no need for a fix to make a certain fight happen, the only thing necessary is the promotion themselves putting the fight together.
That is my general argument against most cries of "fix!!" in the MMA world (like I stated before: from a PROMOTIONAL point of view). Why would Bellator, the UFC, or anyone else take the ASTRONOMICAL risk of fixing a fight when they can make whatever fight they want with a fan base that is fairly forgiving of a loss?
Now, dealing with the specifics of Ken/Kimbo:
The one question I want to ask people who doubt the veracity of the fight is: What kind of fight did you expect?
Ken has built his reputation on his submission skills, but he has always been a guy who generally forced a submission rather than relied on pure technique. If you recall his fight with Don Frye, he wrenched on leg locks several times and wasn't able to get the proper angle to finish the fight. It was a technical issue that dogged much of his career.
What we saw at Bellator 138 was, in my opinion, the best effort of a fighter who didn't have that much left to give.
Those are my honest thoughts, do with them what you will.
Thanks guys, you always great!
Jimmy