Originally Posted by MusicallyInspired
Why can't they just make the 3DS run a regular DS game in the same resolution as a 3DS game? I mean, they're both 3D (as in 3D graphics API). It's not like any scaling is required. They could preserve the aspect ratio (without stretching) but still increase the resolution. For that matter they could also add anti-aliasing filters to the textures.
Even the DS games that are all in polygon-based 3D tend to use massive amounts of 2D sprites that would look weird and blurry if upscaled. Probably something similar to the N64 games on the Wii virtual console, which isn't too bad I suppose.
"I think it's the idea that counts, not the actual method. As long as you set out to cause a horrible death through insects eating the person, you're good." - apenpaap