You haven’t answered my query and your response is presumptuous. My claim is not as absolute as you seem to believe it is. My claim is that on a systematic level, the rate of women attempting to gain more opportunities for better pay, even when using the same negotiation strategies as men, has a smaller success rate than men in the general case. You said this is due to ineffective negotiation tactics.

So, in order to show that this is not specific to gender bias, I am asking you for a negotiation tactic whose rates of success and reception do not have a correlation with gender. If you cannot provide this then I will assume your claim is sourced out of your behind, which has even less clout than the scientists you express chagrin for (at least their stuff has been peer reviewed).