One thing that I did like about this episode that is not immediately apparent is that Winn's public betrayal of Jarro makes perfect sense.
The one thing that the writers do later on in the series is make it clear that Winn has no love for the Cardassians. She fought them in her own way during the occupation and would not willingly be a part of any scheme that would result in their return.
Winn, though power hungry, was always shown to be a patriot. Part of her issue with Sisko, as we later find out, is that she never understood why, despite her faith, loyalty, and personal suffering, did the Prophets choose an outsider as their emissary. I like that she ends up being far more complex than the manipulative schemer that she appears to be at the outset.