Its the primary advantage they have - in tight quarters, like this, they can force a lot of the action into tight quarters. They've lost half their number, but the Cardassians are surrendering, at least in small groups. They do that, unlike Klingons.

He's a bit of a mess by the time he's kicking in the doors, leading the charge to reach her captors, trying to draw attentiont o himself before they can think to use her as a hostage.