Wlad easily has the best skills of the bunch and would win the majority of the time against the other belt holders.

Valuev would be second mostly due to him being so tall. Not a lot of skills but his height gives him a good advatage over the other two.

Oleg worst of the bunch, slow plodding. Does have a good chin and power and because of that you really cant rule him out of a fight against any of the others. The only reason he is third is because he would beat Briggs.

Briggs would be last. If he could fix his stamina issues he would rival Wlad. Briggs has good hand speed and power, but due to lack of stamina cant put good combos together for long or throw more than 5 punches a round past the first. Got extremely lucky against Lykhovich.