I think what SF is trying to tell you is, prior to Echelon releasing it's ECN, Duke had no choice but to use Ambient's junk. Everything that you and your annoying friend DC refer to as "proof" are pre ECN. Duke has been testing Echelon's nodes with the intent of dumping Ambient. However, that doesn't mean Ambient cant peddle their junk to inferior companies such as Itron. I think the bottom line is you and your friend are extremely annoying, and you would be best served if you discussed the bright future of Ambient with other ambient investors.
Maybe you can explain Duke presenting a PHOTO of the named AMBIENT Communication NODE at this recent prestigious International Smart Grid Conference? There is also a photo of an Echelon meter. Also note the underground Ambient Node has the words "BPL Equipment" written on it.