IMHO the DBX is better in a fight, 1xL, 2xM weapon slots.
I use it as a space-taxi, a RES fighter, and smuggler.
It's kind of an in-between of an Asp, and Vulture.
in what way is an dbe better in fight? concerning firepower it is not:
as for combat:[/B]
the dbe as one large and two medium hardpoints, the asp two medium and 4 small. size does matter gainst larger ships. so let's say you are facing an anaconda in a dbe or asp. asp's hardpoints damage will suffer 33% for both medium and 66% for all 4 small hardpoints.
so asp goes like 2x 66% + 4x 33% damage, dbe will go 1x 100% and 2x 66%. e.g. asp will have a little more firepower. add to this, that shield damage is not subject to size penalties, you'll directly see that the asp is superior in firepower. as it is in agility.