The fact of the matter is most western men are bigger than 140lbs, but there are anomalies and good ones at that. As of right now, the best 125lbs fighters outside the UFC reside in Asian and Brazil. There are talented fighters who could compete and thrive in the UFC and there are young fighters who are coming up who can be at the UFC level in two or three years.
The UFC Flyweight Division consists of
Demetrius Johnson (Champion)
I will post my list of fighters I believe will be in the UFC in the next year..