I don't know. In the resistance she probably used a gun, but physically she wasn't as much a threat as she talked herself up to be. She got beat up - and beat up badly, because she attacked first before being flattened
- by a smaller female from a PLEASURE PLANET in INVASIVE PROCEDURES
And more than just her pride got hurt...
in her next scene she seems to be in pain with broken ribs, and the girl that defeated her asked her if she was okay, and warns her not to try that again.
The problem being we have no reason to compare a Bajoran with a Human or with whatever alien of the day that girl was. Nana couldn't beat up Casey but that doesn't mean that a Bajoran female couldn't beat up a Cardassian male. Besides for all we know the base of the neck is like the groin for Cardassians!