>The Masculinity side of this dimension represents a preference in society for achievement, heroism, assertiveness, and material rewards for success.
This definitely does not sound like the Japan I live in, almost the opposite in fact. Japanese people are absolutely not known for assertiveness in particular; it's very much the opposite, they're infamous for being passive-aggressive. Heroism is definitely not a thing here. Achievement is so-so: being a reliable company workers and breadwinner is definitely highly valued, but not being a high achiever the way American culture, for instance, would value. Material rewards are valued though, but even here not as much as in America (which only ranks 62 somehow).
>Its opposite, Femininity, stands for a preference for cooperation, modesty, caring for the weak and quality of life. Society at large is more consensus-oriented.
This is absolutely Japan in a nutshell, for the most part, especially the part about being consensus-oriented. Japanese business culture is completely based on this: no decisions ever get made quickly or unilaterally; they require tons of boring meetings to build consensus before something big gets done. Caring for the weak and quality of life isn't as big as some western European nations, at least in terms of government policy, but it's still there, especially with, for instance, respect for elders (there's even a national holiday just for this).
By contrast, America ranking only 62 here seems like a bad joke. American culture is all about achievement, heroism (hello, Marvel movies!), assertiveness (even when you're completely wrong), and certainly material rewards for success. Caring for the weak? Americans hate that: that's why they vote against social programs any time they can. "Quality of life" isn't a concern in America.
If these people got these two countries SO completely and obviously wrong on the masculinity index, I really have no trust in their rankings for anything else.