So the Equal Pay Act 1970 was a waste of time, or after 47 years still isn't being fully implemented? IDTS.
The gap in lifetime pay is the difference between the average earnings of all men and women working full time. It doesn't take into account differences in occupation, positions, job tenure, hours worked per week, etc. When you do take these factors into account, the wage gap disappears. For individuals, if you are a woman in a job where you are being paid less than a man doing the same thing.... do something about it. The law is on your side and has been for ages.
Sticking to experience rather than anecdote or less-than-impartial 'research', I can only recall one instance when I knew for a fact that a woman doing the same job as me (same job title, same duties, hired at the same time) was paid less, as I discovered on my last day with the company.
The difference between us wasn't sex. I'd done better than her at the aptitude tests we took prior to being hired but if anything she was a bit better than me at the job. We worked for a large hard-nosed financial sector company which paid everybody the least they could get away with. The woman had accepted their initial offer on being hired; I told them it wasn't enough, and got more. Her performance review had gone well but had not led to the rise she hoped for, even cost of living; I made it quite clear at mine it was money up or me out. I got one. I wonder if there is any conclusion to be drawn here.
And please avoid the word 'deniers'. It is merely emotive abuse, intended to shut down debate by raising an echo of 'holocaust denier'. People who do not share your views are perfectly entitled not to.