Would be a great boxing match turning into a tear up after the first couple of cautious rounds. I think Kell has more than enough power and accuracy to stop Thurman and visa versa. Personally I think Brook edges it and is a better boxer with under rated stopping power, but the press and bookies would probably favour Thurman.Good match up so probably won't happen. Don't think either is remotely frightened of facing the other though. That is such an old lame accusation and should be laid at the door of promoters, managers etc not the fighters themselves.