Sounds like an EXCUSE. JEDEC stds are not MY problem ... if a manufacture claims-a-speed, then that manufacture needs to provide that speed. Transparently. I don't want to hear that Black-Forest dwarves can do something under a liq-nitrogen fountain. It's plain false advertising. Period.
They advertise that it can be overclocked up to that speed, not that it's a JEDEC standard. If your motherboard supports EPP memory profiles, then it almost works as advertised. All you have to do is select the EPP profile that you want to use in the BIOS and everything else is taken care of for you.