Women versus men pay - a question of behavior, not sexism?

I just read an intriguing article that suggests that women earn less than men not because of gender inequality, but because women tend to have a more "soft" and less "Machiavellian" approach then men, which are more prone to be aggressive, lie, cheat and do whatever to raise profit. The article concludes that for a better pay equality between the two genders would be to punish more bullies and cheaters.

Does this make sense? I don't know, but I have a twist for this logic: we are (slowly) walking to the path of sustainability, thinking on consequences, CSR and more compassionate way for business success. Would this mean that, when this trend is on its highest, women would earn more than men  because they are much more prone to thinking like this?