So far (like everybody's said) Kimbo's come off as a down to earth likable guy. Whether he's over rated or not I guess depends on whether you ever believed the Elite XC hype-machine or not. If that's all you knew about Kimbo and MMA then yeah, he's been exposed as a terribly overrated fighter. MMA fans however, have been crying foul the whole time, knowing that Kimbo was nowhere near the level fighter that Elite XC was making him out to be.
The Nelson fight was disappointing on many levels. For one, I'm really shocked that Kimbo's ground game hasn't developed AT ALL in the last two years, which is shameful because his fight against Thompson really should have been a wake up call for him to take the ground game seriously. Now, Nelson is a high level BJJ guy. He's a black belt, and he beat Frank Mir at a grappling tournament, the man's not an opponent anyone should expect Kimbo to handle on the ground, but Kimbo sadly seemed to have NO IDEA what to do and ended up just laying there while Nelson gave him noogies. Why after two years with people like Bas Rutten training him does Kimbo have no idea what to do? Well, Bas Rutten and Kimbo's cast mates on TUF have made some statements to the effect that the reason Kimbo has no ground game is mostly because he's simply not training for it.
I also am beginning to get the idea that Kimbo may also be one of those guys that just don't "get" the ground game. If I were Kimbo's trainer I wouldn't be teaching him submissions, I'd be drilling the shit out of take down defense, basic wrestling, and getting back to his feet as quickly as possible.
If I were the UFC I'd be finding some fighters who prefer stand and have them go toe to toe with Kimbo, because let's face it... Kimbo puts butts in seats, but nobody's going to want to watch Kimbo get ground and pounded every time he gets in the Octagon.