Yes, because it goes out native component/RGB and not through a NTSC encoder.
Other than that you still have scaling issues, etc. It would be like a SNES in RGB on a flat panel still. Not ideal but a big step up keeping NTSC encoding out of it.
Agreed. The absolute
best quality SNES graphics possible are through emulation on a quality plasma or led (using WiiU HDMI or PC w/digital connection). 2nd best, and beautiful in it's own unique way (more retro-accurate if that makes sense) is quality RGB setup. 3rd place, S-Video to a good quality CRT TV (cheapest way to play at decent quality with the original system with no timing issues), 4th place, composite to the same CRT. 5th place, RF (avoid).
-edit : by 'best' above, I mean pixel for pixel accuracy, not to be confused with the intended look the developers had in mind when they made the games way back in the day. Many titles actually look kind of strange when boiled down to flawless little cubed pixels. Even the emulators with trickery make things look strange. Sometimes good strange, but it's definitely not the feel from a really nice CRT/RGB setup.
SNES to LCD/LED/Plasma
can have good quality, particularly with a good converter using RGB, but it's very hard to avoid moderate to severe timing issues. Doesn't affect great classic RPG's/etc, but is notable to very high-speed/timing oriented games. Easy to test, run a splitter and have video out to both a CRT TV and flat-panel TV side by side. If you can't see a timing difference, it's good enough. On all three of my recent TVs, a Pioneer Elite P1000, an LG LED Google TV, and a Samsung Plasma, it's still enough (about 3 frames or so) to be an issue, whether direct in by S-video or running through the receiver's conversion to HDMI.
Personally, I prefer a good RGB monitor the best, even more than the superior pixel-perfect emulated results through WiiU/PC. It just 'feels' correct. S-Video is close enough for me though. My spare retro display is now a 35" XBR, and for one, I don't want to move it again, haha. And second, quality RGB screens at similar sizes are insanely hard to find, or I'm not looking hard enough.