"But would better music have been included if the DS had more space? That was the whole point of what I was saying. I don't question the DS' ability to have good sound. It can produce great sound. But the size of the DS cards can limit what developers want to do. If they never had to worry about the amount of space they had to work with, it would have been a lot better. The UMD in comparison has TONS of space. But it takes up battery life and loading times really suck. Nintendo should move to a similar format later on, if these problems are eliminated later."
You know, if Nanostray wasn't in development and footage of that wasn't going around I could see your point, but here we are with a game that arguably is technically more advanced on a graphical scale with high resolution textures, numerous special effects, and a ton of different enemy and boss models scattered through 8 different stages, yet that game seems to have a close to CD quality techno soundtrack. Then again this also could be attributed to their custom sound engine as well, but the truth of the matter is they did it.
Now that I think of it, NFSU2DS sounds like it's using the same sound engine that they used for the GBA with no upgrades at all. Same little scratches, same samples, same everything. They just mixed it differently. Chances are they probably weren't planning on doing any more than that either. One more thing, in a previous interview with IGN they specifically mentioned that storage space WASN'T a development issue they ran into.