It seems to be very SLIGHTLY less resolution AT THE SERVO. I compared "beeps" of trim from the TX before observing movement of the arm. I use a JR 10X, Trim Rate set at "4", so it is pretty fine changes. On the 8611's...."one beep", could see movement. On the 5955, "two beeps".

This is a pretty subjective and unscientific measure, but it's a good relative comparison between them on the same surface, same AC, same pushrod, etc.

I'm not really sure if this comparison is even valid and meaningful, but it was the easiest comparison I could think of to get SOME sense of resolution differences.