My memory is fuzzy, but my recollection is that Pons & Fleischmann's non-discovery involved unclear "waste heat" measurements, and a setup that wasn't well described, making it difficult for other researchers to duplicate. That would seem to contrast with Sukbae Lee, Ji-Hoon Kim, and Young-Wan Kwon's work, where everything suggests they've provided a readily replicable description of the material and process, and the evidence (magnetic levitation) is going to be pretty obvious.