I'm sure reality will set in
Some folks are disappointed that the FX series isn't an Intel i7 killer but it was never advertised to be. For all practical purposes almost any CPU will more than meet the demands of mainstream PC users. The overclocking potential of Zambezi based CPUs seems to be 4.5 GHz. on air which is pretty cool considering the price.
I have no doubt AMD will sell a bunch of Zambezi chips even if some folks are disappointed that they don't out perform Intel's i7s.