Jedi Starfighter isn't a Force enhanced leap over Starfighter, but I had very little to complain about then, so it's not much of a problem. I did notice that Nym's fighter, as well as a few of the other ships and locations received a nice shine up (compare Nym's base from the first one to now), but if you're expecting Rogue Leader, don't hold your breath. I did notice a few areas of slowdown in areas, mostly before a capital-class starship blows up. Even though this can become a distraction, I also found it to be a nice quick breather during intense firefights. While most of the story unfolds during missions, from time to time cut scenes help to push the story along even more. For the most part I liked them; some of the characters look a little too lanky and unfed.
As sort of a nice 'perk', Jedi Starfighter also gives fans looks at some of the new ships making their debut in Episode II like the Geonosis fighter and Republic Gunship. The Republic's starship should also bring a smile to fan's faces.
Sound does not disappoint, but then again that is usually the one part most Star Wars games get right. In addition to the requisite laser blasts and engine sounds, most of the soundtrack contains fully orchestrated music from Episode I. There are a few missions with music I haven't heard before, but whether this is from the new movie or just something Lucasarts made up, I couldn't tell you. The voice acting, once again, is top notch, although the voices from some of the main 'known' characters (i.e. Mace Windu) sound a little off from their movie counterparts. I also ran into a problem with the music track skipping from time to time - especially at the end of the levels. This is usually a really quick occurrence, but it's enough to make your heart skip a beat thinking the game has locked up.