Its not too much slower, suprisingly close actually. However looking at that OC, it looks like I might be moving to intel for my next rig.. and that just makes me sad.
You with me 'Bama, or are you still holding on?
I should point out the Intel is slightly disadvantaged due to running a FSB of 230MHz, instead of stock 266MHz. Therefore memory would be running slower as well.
A 2.4GHz/266FSB Q6600 would generally score 5% better than those numbers, so we're looking at a 10 - 15% performance gap on average, though gaming is an unknown at this point, but I assume C2Q would generally be ahead as well, given it's inherent IPC advantage.
AMD needs to do a '3870' and price these closer to $200, not $300. Then again, not many people research products through reviews etc, and theres plenty of AM2 people out there who would gladly upgrade to a QC chip I reckon, so theres certainly a market for Phenom. I predict stock would be pretty tight in the first couple of weeks...