There is a bug in nod32V2.7,that is nod32 can't detect them when you scan archives of Storm worm samples,but when you extract them,nod32 can detect them.It has fixed in EAV/ESS.
webwasher is probably the king of false positives. it flags almost everything.

No wonder that it scores high.
p.s.: forget the "4 detection methods" based on what virusinfo says. just because it does not show up there, it does not mean that other av's do not also have those "detection methods". they use only ~60 samples. heuristic and supsicious may be the same, without knowing the engine behind a product you can not conclude on how it works based on what a log file says. And e.g. KAV has also packer detection, but just because in the 60 samples scanned by virustotal there was no packer detection by kav, virusinfo says KAV does not have the "packer detection method".
Yes,I agree with you.Many AV use heuristic/generic detection to flag packers,what is worse,more and more companies will join them,it will cause more fps in China.