For us "Good" is actually an alternate description we had for 3 stars. We definitely see a 3 star game as good and worth playing. Something like Majin and the Forsaken Kingdom which I'm playing right now, that's enjoyable and has certain charms, but it also has a clunky side as well.
To me at least, there's quite a clear jump between a game that's "Excellent" - highly recommended, well crafted - and "Masterful," which is essentially saying, look, this is how a game like this should be done. This raises the bar.