Is there really that big of a difference between S-Video and RGB on SNES?

[Informationator]

I concur with Hamburglar in that the SNES' RGB isn't as sharp as other systems like Genesis, SMS, PC-Engine, Saturn, etc. The SNES has a bit of blurring/trailing capacitance on the right side of high-contrast objects that the other systems don't have. (I can't speak for the SNES Jr.)

The S-Video on SNES is clear enough that RGB isn't absolutely justified. I don't have S-V shots but my page here does have some composite-RGB comparison shots: http://www.chrismcovell.com/gotRGB/rgb_compare.html

Yeah, with the monster S-Video cables my video quality is every bit as sharp or sharper than the RGB screenshots that guy is showing. I've used crappy S-Video cables before and their quality wasn't half as good as the monster cables.