The counter side of that is that the chips were supposed to be faster but AMD has a history of their chips not consistently hitting advertised clock speeds so they chose to clock down and make sure everything hit advertised rather than some of the lower samples not always hitting it.

This seems to be "Intel got bad press for their stuff and we don't want any semblance of a defect in our launch" and is a minor bit of kneecapping to avoid the occasional weak sample missing advertised speeds in less than ideal conditions.

I love AMD to death but they do have a tendency to oversell on clock speeds even if their performance is stellar otherwise.