I'd like to point out some syntax here. the website says nowhere the hashes apply to BITCOIN MINING. It just says hashes. "Ghash/sec" is still appropriate terminology for hashing for the purposes of decryption. I wouldn't be surprised if this is in fact a generic hashing FPGA, which can achieve these speeds. Whitepixel (
http://blog.zorinaq.com/?e=42) can get 33 Ghash/sec on 4 5970s. That's SHA password hashes, not bitcoin hashes.
I'd expect butterflylabs is correct, but they are selling generic SHA hashing FPGAs. It is the bitcoin people who are unfamiliar with the terminology that assumed they were referring to mining. The page says nothing of the sort.