No ad hominem but some logic since you are guaranting frequencies, heck, i thought that only an official statement was credible...
Personaly i do guarantee nothing, though i m assuming that a FX E wich has a 4.2 stock turbo has 100% probability to get to 4.4 given the observed margins on rewiewed samples, on the other hand i see you assuming that huge overclocks , like 3.2 to 4.5, are a certainity.
FYI both Hardware.fr and Computerbase.de got 5.1GHz and THG also got very good results with the 8370E wich is 3.3-4.3, 18% frequency margin, 10% higher ceiling than the early 8350s.