Your assertion is that Japan and Korea are highly discriminatory against women? That's certainly interesting and I'm not sure I can defend against that position. Perhaps women in japan and korea are extremely oppressed. This is certainly not what I thought after reading for example or just seeing what's portrayed in the media. https://en.wikipedia.org/wiki/Women_in_South_Korea
Meanwhile your source has Rwanda as #6 most equal. I'm very confused about what the data is saying. It's certainly feeling more like a checkbox list.
So let's look at Canada. Both my data and your data have them with poor performance. Mind you my data is just looking at wage gap.
Women in Canada for ECONOMIC PARTICIPATION AND OPPORTUNITY is 27th place behind Brunai and Ghana. This seems quite incorrect. Women have completely the same economic opportunity as men in Canada. So this is a debateable number. Women are educated BETTER than men and certainly work. So I'm not sure how this data was determined. The actual number should be showing discrimination against me.
Women in Canada are 1.0 for education. That's good. Like I just said https://www150.statcan.gc.ca/n1/pub/81-004-x/2008001/article... Women outnumber men. So this is actually false information. They capped the number wrongly at 1.0.
Women in Canada for HEALTH AND SURVIVAL aren't in the list? USA is in 71st place. I happen to know this statistic. Women live longer than men. So they cherry picked and removed this data? https://www150.statcan.gc.ca/n1/pub/82-624-x/2011001/article... This another number completely false.
Women in Canada for POLITICAL EMPOWERMENT are 21st place behind india and nambia. Except we live in a democratic society with no barriers. Women can run for politics. So this should be a 1.0.
So I guess in conclusion I find your study to be biased, false, and wrong.
Let me explain to you what's happening. Women have the CHOICE. They choose careers that they get paid less in. This is a good thing. They have the freedom. The gap is not a problem.