Antony and Cleopatra - Gender

I don't think there is a large difference in gender roles between Antony and Cleopatra. However, I feel that Cleopatra's atypical female character makes the dynamic between Antony and Cleopatra much more... complicated. This informs the power politics of the military conflicts, as Cleopatra's abandonment of Antony at, sea plays a huge role in the conflict. I still don't understand why Cleopatra would abandon Antony, as their victory would benefit her. 

I think Cleo's power over Antony is due to her sexuality, and is one of the reasons he acts so irrationally, but I think Antony is also attracted to her because of her power. I think that influences his decisions, and sees their relationship as a way to effectively rule much of the world. This attraction to her sexuality and power excites him. Maybe he sees her as an equal, and craves a relationship like that. As Enobarbus says, 

ENOBARBUS

Never. He will not.

Age cannot wither her, nor custom stale

Her infinite variety. Other women cloy

The appetites they feed, but she makes hungry

Where most she satisfies. For vilest things

Become themselves in her, that the holy priests

Bless her when she is riggish.