Probably because Crucial didn't send the reviewers a sample product. Generally speaking, article writers do not buy the memory (that would get really expensive really fast). Product samples are usually requested by the writer/reviewer and then the company sends the product. Sometimes they simply don't send the product for any number of reasons. One could surmise Crucial didn't send a sample because they know it's a shitty performer. Or it could be they just didn't want to 'cause it was a Tuesday.