(1) Staker claims 100% excess heat following his method. So either his calorimetry is flaky, or that is a counterexample to what you say.
I do not see any problems with calorimetry, and neither do you, so you have no basis to say it might be flaky. You can't just wave you hands and say that. You have to have a reason, and you have to tell us what it is. So, if the method always works, it is a counterexample. And most welcome, too.
(2) Well the LENR field could do these tests, provide "good" electrodes to those pesky people who run high quality excess heat from electrolysis replications but would otherwise blacken the field by YANRing.
I do not know anyone who has the time or the money to do this.