He probably means SB has room to scale in frequency while BD propably wouldn't.
Given the process problems and the frequencies BD gets at stock and oced, it seems like BD has alot more frequency to gain than SB in the same power envelop though. (FX8150 -> FX8170 = +300MHz (300MHz turbo). 2600 ->3820= +200MHz (100MHz turbo) with an increased TDP.
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