How do we verify HAN technology throughput?

The big numbers that HAN transport technologies promise these days are more than mind boggling. They often do not have any real-life data to support the claims. A concise procedure that an ordinary user may be able to duplicate is needed to close the gap. Do you know any procedure that can deliver such? For example, how about publish performance numbers based on file transfer between two PCs that are interconnected via two HomePlug AVx adapters? If PC CPU speed and Ethernet interface may affect the performance, how about specify what characteristics are required? We can even start with the two adapters are on the same duplex jack as the reference point.