I don't know how you can argue that the NES is the worst, when you put VCS as one of the best when it was so flooded with bad games that it CRASHED the entire video game industry. NES, on the other hand, had so many good games that it SAVED the industry and completely dominated its generation.
They both had plenty of good and both had plenty of bad, but c'mon, calling one the worst and one the best in this topic is absurd. They're really quite similar, and given the history I just pointed out, the VCS should get the nod for a worse ratio.
You can give the CDi an excuse, if you want, because it wasn't intended to be a game console, but what about the completely awful systems that were? You can't claim the NES is the worst when there's stuff like the R-Zone out there.