It will OC 17% better than its SB counterpart.
What review? Not all reviewers are equally... reputable. We'll leave it at that.
I do want to say that tomshardware is a great reviewer (and I'm saying this unbiased by the fact that we're on their forums). They have a great testing environment. But you also have to remember that not everything Intel advertises is 100% true... if Intel says it OCs 17% better, I'm going to assume it OCs about 12% better (on average). Sure, some chips will OC 17% better. I DO think it will OC better than SB, though...