It was a demo to show the properties of the QX. Whether it was correct relies on believing what Rossi said. A short plasma probably is of low resistance and the current was measured. You have no more proof that he lied than there is that he didn't. When in doubt waiting for confirmation is better than jumping to a conclusions that fit your bias.
Pons & Fleischmann have been replicated (>100 times according to Jed), yet academia still does not accept LENR as real. The critics are good at making up ways that show any test could be fraudulent.
For the 1billionth time.
Running a PF like experiment and
Getting some amount of excess heat is NOT replication.
Running the SAME experiment time after time and getting the SAME results is replication.