... at least not according to Michael Bisping who believes that's probably why he's not excited for his upcoming main event fight at UFC 130 on May 28 in Las Vegas, Nevada.

Jackson was originally booked to throw leather with Thiago Silva, a throwdown damn near anyone could get up for. Then it was learned the Brazilian failed his drug test after UFC 125 and poof -- that match-up was gone.

All was well, though, because UFC matchmaker extraordinaire Joe Silva has made an entire career out of, to borrow a phrase from Brock Lesnar, making chicken salad out of chicken shit.

However, the decision was made to move light heavyweight contender (term used lightly, at least for the time being) Matt Hamill into Silva's now unoccupied slot opposite "Rampage."

Suddenly the former champion was quiet and whispers of his imminent demise were bandied about at will.

His good friend Michael Bisping attempted to clear it all up to MMAFighting recently and let us know the culprit behind Jackson's lack of enthusiasm:

"Hamill, while he is a fantastic fighter and a threat to most people in the light heavyweight division -- no way, shape or form knocking Matt Hamill -- I know that 'Rampage' wanted to get the title back one day, and I don't think beating Matt Hamill would be a fight that would maybe get him a title shot. So perhaps that's why he wasn't so excited."

Intriguing theory.

It holds plenty of weight when considering the sequence of events. First he was thrown into a match-up with a heavy-hitting knockout artist whose style would play right into his hands and thrill fight fans the world over.

He was also rumored for a rematch with Rashad Evans, one that received a lukewarm response, at best, but would have no doubt been a big money fight and a given him a shot at revenge.

Jackson was even offered a title shot against Mauricio "Shogun" Rua after Evans injured his knee, which he had to turn down due to it being on such short notice.

Finally, he was forced to settle for the showdown with the wrestler without a ton of name value.

Can anyone blame him for not being so excited?