[Phoenix-D]

Well, on the high end of the scale a DW planetoid would make mince meat of the Death Star; its shields are designed to resist the gravitronic missiles it fires, which are fully capable of destroying planets. And its energy weapons are nastier than that..

Lower down I'd say a SD(P) would kill a Star Destroyer, though I don't know enough about em to say if a regular SD could do the job or not. SD(P)s are just so much overkill its not likely the Star Destroyer would ever get in range.