Honestly, I never played the PS2 version of Myst 3...I got it from a roommate that left it when he moved out years and years ago. I had the PC version, and it wasn't much different than the others, but it had more character interaction and less of a 'mystery' feel to it since it was the 3rd in the series.
But as far as how the PS2 translates the gameplay, unfortunately I cannot comment. =(