Fubuki is a cold hearted, ambitious, confident individual who does not doubt her own abilities but understands her limits to an extent. Causing her to not to do anything irrational. 

Psykos has great authority over almost everyone and oversees the organizations operations and activities  and as a Dragon level threat she is an extremely powerful individual. She is way stronger then Fubuki 

They both fight over you and trying to prove whos better. Psykos has bigger bust than Fubuki 