Olivion, you are smart guy, thinking...HWbot is community of OCs, do you really mean, they have only one CPU? No, most of them tested few chips and show only the best results. And some OC star binned form many, many chips.
This thread is only Massman guide how to boot at max multiplier. Doesnt mean stability. My SB boot at 53x to Windows with this settings, but is stable "only" at 4950 Mhz .