I think it's more realistic to say that some people will get a Q6600 to 3.6ghz and most will struggle to keep it cool above 3ghz.
That defeats the purpose. Why would someone overclock a CPU above its heat safety threshold?
Also, there have been cases where people will absolutely not be able to pass 3.2 Ghz on a Q6600. I wasn't trying to show the majority or average, but more the extreme situations.