Two responses to that statement. Hilary Clinton was from a political dynasty, but still couldn't get elected. Trudeau is from a political dynasty too. Would a female Trudeau have been elected? Probably not.

Second, the political dynasties show that people in those countries are biased on the basis of class, not gender. 

Finally, there are a large number of political dynasties in the US (Kennedy, Bush, Gore, Taft, Adams, etc.). And that happens in a country where family ties are much weaker than they are in Asia.