My '06 Wakesetter VLX is better on the starboard side. I always assumed it was because of the driver and never considered prop rotation.
Maybe it's partially affected by driver and partially by prop rotation? I guess on a left hand rotation prop, the friction of the prop spinning through the water would cause the boat to lean toward starboard, but is that enough to make a real difference? When accelerating to faster speeds, I don't notice the boat leaning to starboard, but maybe one or two degrees of list makes a difference at surf speed?
Now, I just add 5 Fat Sacs and the surf wake is wicked on both sides.