Thanks for the comment A lot of the credit has to go to the model maker, for providing such a wonderful ship to work with. Realistic art ? - in my opinion it's a combination of all the things you mentioned. But as a first step I'd recommend looking into HDRI lighting most 3d packages support it.
gotta say, the design is SIMILAR to the Escape Velocity NOVA's STARBRIDGE, which is a dual swivel-engine ship, probably a lot faster than this though, and able to enter hyperspace and land planetside, and probably more maneuverability in larger areas where this kind of ship can probably make precision landings exactly, although rather... large.