Now if thats true I need some info on that but I can’t find any?
I realize they include signatures for packed nasties - but I don’t believe they can unpack exe packed files.
If that is still the case - and “virusx” is exe packed 10 different ways - then they need 10 signatures whereas an AV with exe upackers needs one, i.e. less sigs, less updates. thats all.