I think you meant to say "are not true"Not trying to hijack this thread but to the OP have you actually tested those speeds you are posting, give me a break, I also have used and tested many home plug devices (as well as some commercial grade equipment) and can tell you, the rediculous claims from wireless are true...
you should also consider the need for lightning protection, a good surge/lightning protector will totally block the home plug unit.
Actually, a cheap surge protector that uses MOVs as a voltage clamp will block the HomePlug signal. A good surge protector that uses diode clamps will not block the HomePlug signal.