After all, "a brightly lit blob is still a brightly lit blob..." but also "a high resolution picture is useless when the lights are off...
That is a fun argument. My experience and that of my son-in-law shows my Bushnell 4200 with a 40MM objective to last as long as my Swarovski z5 when both are on the same magnification setting. I tested them on the eye charts at 127 yards and the deer antlers at 131 yards.
The exit pupil of the z5 on any comparable setting is larger than the 4200 and yet is no better for either of us.
