it depends on the target audience of the website also, quite a lot even; for example a CPU stepping for Joe Shmoe doesn't mean a thing afaik
readers of TomsHW are basically those people, sometimes they do venture a bit further but they try to keep it noob friendly,
[H] is in the middle of the TomsHW and Extreem OC sites, trying to balance crazy overclocks, with valuable data for Joe Shmoe in their reviews, sometimes they succeed, sometimes they don't. But simply put, it's 99% of the time due to time constraints that not every aspect can be explored to the roots.
Whereas one overclocker could experiment during weeks with one motherboard, a reviewer has to check out 5 of them, besides a vidcard roundup and a heatsink test, if you know what I mean:)
while the info he will provide in his review on the motherboards will almost never satisfy the overclocker completely, it will pretty much be more then needed for the average HW website reader and Googler
