Indeed, there is a lot of differences between LENR and memory water. I was only talking about the "fringe science" side of both subjects.
About the replication of water memory (I don't really like this term... :s), no artifact has been identified as far as I know. Many people suggested that the results could come from some artifact or errors, nut all those claims was not relevant or have been already checked and proven not to be the answer of the effects observed.
It went so far that, just by playing the waves (kH ranges) near an allergic heart caused the same reaction as giving it the medicament. No high dilution used at all!
Once again, I am just pointing out the reaction of the "head" of science toward "unauthorized" science, despite the results of many scientists worldwide.
About LENR, I don't think that a minor failure would damage LENR a lot. There is too much players having good results, reactors prototypes are already on the run. Big investors are not affraid anymore.
Even a big failure would not kill LENR anymore, it went too far now. We just have to be patient!