They are just in a different place in life, but taken as a whole they have the same desires, demands, and concerns as older women.
If you are thinking about persuing foreign girls for marriage there are several issues that you should consider.
The first of course is what area of the world you are considering pursing a bride from?
You can find a Russian woman who is totally submissive and there are Filipina's who are pushy type A women.
Whatever grain of truth existed in the national stereotypes has changed, because the countries where most of the mail order brides today come from have under gone enormous social, political, and economic change in the last twenty-five years.
And some, perhaps even most, of the blame for those failures was yours. Be honest with yourself and try to grow as a person.
If do not recognize your own weaknesses and try to correct them then you are just asking for a world of hurt and humiliation.
First, are you interested in a particular young lady or younger ladies in particular?
If there is a growing mutual attraction between you and a particular younger woman, regardless of a large age difference, that is probably a good thing.
Russian ladies that grew up in the last dreary days of the crumbling Soviet Union had vastly different life experience than young Russian bride who grew up with the internet in a more or less free society.
So, the old stereotype of an Eastern European lady as a pushy, materialistic, green card bride, which was always a gross exaggeration of the worst Russian ladies, is much less true today.
She may be facing awful economic and social conditions, but it still takes courage, vision, and a sense of hopefulness for a foreign woman to make the choice to sign up with a global dating agency.