From what I understand, the GB was basically an NES with a monochrome color screen and slightly faster processor?
I'm not big on technical stuff and specs, but judging by the games yes.
I have a huge library of GB games and the best ones feel every bit as good, responsive and smooth to play as their NES counterparts, some even better.
For example I prefer Kid Dracula on the GB over the Famicom version, Adventure Island 2 and 3 are also better on the GB IMO.
Hammerin Harry is a different game, but to me, a much much better experience on the GB.
Sadly for me, if not for the Super GameBoy many GB games on the original green screen GB are practically invisible even tho I LOVE the green screen when I can actually see some of the games
The GB Pocket screen tho, that I can see somewhat better

I have absolute FASCINATION with the green GB Screen but due to my severe visual impairment I can only play it briefly and under just the right kind of light and even then games like Mario Land 2 are completely unaplayble.
Kirby is ok in some levels
What I personally think is, they should have made the screen bigger and not so sunken, the Watara SuperVision is so much easier to see even for me in spite of its more pronounced ghosting
