They utilize a large collection of samples for testing according to their site. Any of you hub testers especially malware hunters can attest, that finding a handful of true zero day samples, well, that is a task. So simply put, these suites are all in the upper ranges, because most of the samples are older, meaning, they should be doing at least this good in these tests, and if not, they are really worthless "this does not take into account the testing methods which really are not as transparent as they should be".. Secondly, open the PDF again, this time, scroll to the last page of it to the Copyright and Disclaimer, pay close attention to the wording. These two things, should be all a user needs to see and know, to understand, that this is a basic outline of the products tested, and really tells you nothing and you most certainly should not be picking a product based off of them.