I actually think the NES is at least at the same quality when it comes to games, and I love them for their snappy and more arcadey simplicity, but it's really hard to go against SNES aesthetics, as shallow as that might be. Mario 3 might be the best platformer ever, but Yoshi's Island is pure art.
There are exceptions, of course (Mega Man looks way better in 8-bit) but the general trend is difficult to ignore.
NES games are unplayable.
They're probably more playable on a purely mechanical level than everything that followed on console (outside of EyeToy, Kinect, many Wii games, etc.) due to their incredibly simple button layout. Modern console games are generally more
forgiving in many respects, but getting a grip on even the basics of most of them is far more demanding. It's a tradeoff.