The title of the thread is "You dont LOOK like you white or Asian women"..suggesting they are determining this based off of appearance, and very limited personal interaction. This statement wouldnt make logical sense if they knew you or had a relationship with you, as they would say "you act like you date white women...or you come across like you date white women"....
You also go on to say "Often girls might say this because you dont look "threatening" or you don't have "swag" as they call it.." ....again, appearance oriented. This statement makes more sense for someone you just met, and is going off your superficial look ---- its just an awkward statement to make for people that know you.
So either you're lying, or you cant read yourself.