When comparing keyboard to keyboard some sax sounds might sound better than others. When compared to a real sax, the sax sounds on any keyboard suck.

Piano, guitar, strings and even some trumpet and trombone sounds surprise me. I played in a full size concert and marching band which for the time was very good. We were in National contest for high school bands. I've play with quite a few very good New Orleans dixieland and rock&roll trumpet and trombone players in New Orleans. If you've every played with decent sax players, you'll agree the sax sounds suck.
Boo