The top ten women (not counting Holly and GDR, who are really 135) have a lower winning percentage than the top ten at WBW. The top ten at 145 have a lower winning percentage when fighting women at 135 than they do fighting women of their own weight class. That should tell you about all you need to know about the "talent" in this division.
Marloes Coenen, Cyborg's best win, has five losses at 135 and one to someone who now fights at 125 and was cut from the UFC. Coenen has a sub-loss to Tate.
Cybrog herself has only fought six women who have not fought at a lower weight class, several fighting two weight classes down. Of those six, three have zero wins. The numbers here pretty much speak for themselves about the depth of talent in this division.