This test was actually a few months old. Let's assume that there are actually 1500 different (runtime)packers worldwide. When we take the reliability/confidence level to 95 %, required sample size to 21 (as it was in that test), we can get the precision/accuracy level of 21.5 %. So there is quite large error margin in this test but still NOD just can't do so much better result after all. Best regards, Firefighter!