I don't know what you suggested about Russian females, even though I wish I did, but I've known a few Russian dudes in my life. The whole western smiling thing throws a lot of people off when encountering them, because for them it has to be spontaneous. In the West, we use it as a tool to communicate.
All I really know is, they are honest and hella strong in physicality, virtue, and honesty. They're not backstabbers individually, even though I've heard it's pay to play there in terms of payoffs to get what you want.
Meh... Chinese.. my experience with individuals seems to be the exact opposite of their government. Which is a very sad conclusion to have. On an individual level, there is nobody in the world I would trust more.