This is an imaginary thread along with imaginary posts about what would happen in a imaginary street fight.
Karelin outweighs jones by a significant amount of weight. He is about 128kg/ 284 lbs of solid muscle. The problem here is he is not a actual MMA fighter, he is a wrestler, and as Fedor stated it would not be a fair fight.
Just him being a great wrestler is not a given to beat a MMA fighter of jones stature in a street fight, and jones himself can also wrestle. Although wrestlers are said to have an advantage because they can grapple, getting hit is something wrestlers are not use too. Jones is a Muay Thai Striker, not a boxer, he uses knees, kicks, and elbows, and they break bones and hurt very badly when you have no experience getting hit by them. On top of that Jones has a background in Greco.
If used correctly, you should be able to use Muay Thai's strikes to beat a wrestling opponent before they have the opportunity to grab a hold of you. Jones is not some pussy, he is a champion, who is also a nasty fighter and will fight dirty in a street fight. Lets just say that Karelin supposedly gets jones down and has top control, an elbow by jones on the botton upward would more than hurt Karelin badly. It would not be a fair fight and jones has too many tools.