So I finally got component cables for the Wii today, and decided to try out several GCN games to see how they look. Eventually, I got up to Zelda: Collectors Edition and tried it out. Thing is, even with the widescreen option turned on with the Wii (Also progressive scan turned on), pretty much all the GCN and non-3D virtual console games run in a pseudo-widescreen with two little black bars on the side of my TV screen.
However, with Ocarina and Majora, they run in a "full" widescreen mode (Filling up the whole screen, although not quite widescreen mode like in more recent titles). Same goes for the Virtual Console version of Super Mario 64.
My question is this: Is this some sort of feature with the N64 emulator that they use, or just something the 3D titles can support that the 2D ones cannot (Due to pixelation?). I find it odd that emulated N64 games can support this while normal GCN games cannot.