I couldn't turn up any evidence of this having been done before on here (five minutes of scanning through forum-isolated keyword search results is as much effort as I'm willing to invest in avoiding a repeat...and honestly, if there was a thread started earlier than 2009 - the hell with it). Let's say Wladimir in his current form, and Kenny at his very best (take your pick of which performance best captures this). There's absolutely no way this goes 12 rounds, right?
Hmmm.... Kenny will give Wladimir Stylistic problems... He's a 6'3, 215, conditioned heavyweight, with a stiff left jab and a great overhand right. Kenny also has a pretty good left hook as well, and can go to the body. Kenny can box, or slug. Against Wladimir, he would probably like to slug. Wladimir is a tall heavyweight with a very powerful right cross, and a very good left jab too. He also has a very powerful left hook as well, when he decides to use it. Wlad has pretty fast hands, too, for a guy his size. Each round, he doesn't really throw many punches... Norton's best chance would be to pressure and try to slug against Wladimir. I haven't really seen Wladimir fight on the inside recently, if that's the wlad we're talking about? Norton would do body work and perhaps do some damage with a left hook. If Wlad catches Norton, he'll probably end it. But the fact is that Wlad doesn't really throw many punches.. Mostly just a lot of jabs every round, and occasionally a right hand... Wlad will catch him though, so I got Wlad by KO in 5 rounds. Kenny will give him problems though, and might even rock him at some point.
Although I picked Wladimir by stoppage, an abrupt knockout the other way would not come as a remote shock.