I recently configured a 22/45 Mark IV LITE for a steel challenge gun. I was debating whether or not to add a comp, as I never really believed a comp on a 22 did anything. I did a few mag dumps holding center of mass at 15 yds with and without the brake. The difference in group size was negligible, especially for a steel gun, but there was definitely less dot movement with the comp on FWIW.
Interesting .... thanks for your input !