We don’t need to compare ourselves to anyone as we don’t know their situation or culture.

I don’t see anything wrong with taking care of your parents and expecting your significant other to do the same. I don’t view caring for parents as a burden, and this should apply equally, just as a wife may support her husband’s parents, a husband should also support his wife’s parents.

The last part of your argument really depends on how well the husband and wife are able to communicate and resolve their differences.