I would have to say, some of the folks over on Newegg don't know their foot from their own head, reading reviews over there is boring.
Won't argue with that. But I'm trying to look at the numbers in a "statistical" sort of way. A few low scores are understandable - that kind of stuff always happens. Then checking the details, a lot of people grumbling that the fake-raid doesn't work right, and that I attribute to the boneheadedness of even trying to use fake-raid in the first place.
I'm more looking at out-and-out unreliability - multiple people with DOAs, multiple people having trouble dealing with support, multiple people having subsequent failures, etc.
I also generally discount people who can't get Linux running on a board, though I read more carefully to see why. I've mucked with a fair amount of hardware, and generally gotten it all working, though I must admit that I don't do much on the bleeding edge. Even now I have a PCI soundcard plugged into one system because I haven't been getting proper volume out of hda_intel, though there have been substantial ALSA updates since I tried, and I haven't gotten back to it.