I don't think the signature used on Virustotal for each AV are all way the latest, if you look at the video ZoneAlarm detected it but
Kaspersky dose not, I've always thought ZoneAlarrm used the Kaspersky engine.
I think the problem is not the low detection ratio, but rather the fact that many companies don't educate their employees well enough to not open such things. Especially in this case there are many steps involved to get infected...