Why a Lucrehulk is preferred for fictional commerce raiding

Would a Providence or a battleship-equipped Lucrehulk be better for hit-and-run space raiding?

The tentative choice is a Lucrehulk, chiefly for its merchant-ship appearance and an imagined option to detach the outer structure while escaping.

For the fictional cruiser-raiding scenario, a Lucrehulk is preferred to a Providence because it could more easily resemble a merchant ship. Its detachable outer structure is also imagined as an escape aid. The choice is tentative because a colleague with more knowledge of the setting is absent. The real naval idea illustrated is the usefulness of disguise to a raider.