I'm not impressed. They've had two years and all they manage is a ~10% IPC increase in the average case? In many tests a 3.3GHz SB is comparable to a 3.33GHz Nehalem quad.
If Intel had done a 32nm Westmere quad-core it would be almost as good and they could have done it a year ago. The gains in clockspeed, power consumption and pricing would all have been seen. SB's die size is less shrunk than I would expect.
I realise this represents a large increase in perf/$ due to the new postioning and higher clocks, but it shouldn't be hard for AMD to catch up with Bulldozer. Of course everyone will jump on SB just because it comes 3-4 months sooner.
Actually AMD will have the performance crown for six months or more because Intel's new hex-cores aren't coming until Q4 yet AMD will have an 8-core BD in April or May. Intel won't have a desktop 8-core this year.
