Clinton,
Could you please tell us what ...
"the differences between the risks arising from pulling the throttle on a carburetted engine, compared with a fuel injected engine,"
are, and if ....
"All of the simulated engine failures of which (you are) aware that turned into real engine failures occurred when the throttle was advanced after the failure was simulated by pulling the throttle."
were carbureted engines, or fuel injected engines?