Just don't forget the Intel E8x00 series, mainstream priced cpu's which scale up to 4GHz rather easily, at these clockspeeds you have a very fast setup for daily usage/gaming. Quad cores will be either slower, cost more, use more power, require more volts and better cooling ... I honestly don't think AMD will sell their PII cheaper then Intel's duals. In other words, not that interesting for daily usage/gaming/apps which don'ts scale with multiple cores.
In other market segments, workstations for example, I don't think there will be too much overclocking going on, important is that AMD can get hold of the performance/watt crown at near 3GHz, with the correct price AMD can be very competitive. Just one thing, don't expect that these cpu's will come for cheap, expect to pay premium prices like we're used to with FX cpu's. If AMD can get more money of their product they won't hesitate, they're not better then Intel
