There is a theme here in what has already emerged consistent with Rossi history.
In past demos Rossi produces a severely under-instrumented setup, and makes tendentious claims based on this that his device generates large amounts of power.
The technical interest depends on how much information is revealed about the exact setup and measurements. If enough, then why Rossi's claims are incorrect can be fully understood. Otherwise all remains speculation. You'd think by now he'd be good at not delivering enough evidence to remove speculation but one of the merits of this story is that it seems Rossi 100% believes his own statements and so does not always suppress the evidence showing what he has done wrong.