The reason Vitali didn’t knock Charr out was because the doctor stopped the fight so quickly in the 4th round after Vitali ripped up Charr’s face. The fight was pure comedy with Vitali giving Charr a minor beating and then ringside doctor saving Charr from a beating by stopping the fight due to his cut up face.
Charr was like a wide-bodied punching bag with arms.
The fact that Haye selected Charr to fight instead of someone better suggests that Haye doesn’t want to take any chances that he might get beat and end up ruining his second chance against IBF/IBO/WBA/WBO heavyweight champion Wladimir Klitschko.
I still can’t understand why the WBC has him ranked so high because he looked like a rank amateur against Vitali.
http://www.eastsideboxing.com/2013/haye-im-going-to-put-charr-flat-on-his-back/