Also if it was you running the test, and your half-power output is about 500 kw, if you had to have outside generator power powering a cooling system, wouldn’t you do your best to pick a generator not capable of producing equal or greater power than your supposed output power of what you’re testing is? So that nobody could ever raise the spectre of the generator possibly being wired in to produce the output results?
In the articles I found it was mentione that the cooling pumps were not running at full capacity, maybe a third of their capacity. Sounds like he might have gotten by using a smaller ‘genset’ as you called it. If a 150 kw or 200 kw genset could have supplied the necessary power to the pumps but the output of the e-cat was still 480 kw, that would be a lot harder to argue with.
The genset had to provide not just "cooling"(and other parasitic loads) but STARTUP power, so it had to be as big as it was. See my earlier point about splitting the "parasitic loads" from the "startup load". Rossi simply chose not to do that. You or I might have chose otherwise.
But your fundamental flawed assumption is that no measurements of power from the genset were made. It is ridiculous to assume that, as that is the key to what the "validation engineer" was looking for. Do you "really" think that he didn't make measurements to determine that the supplied load was reduced??