Chris, I can understand your frustration...
Increasing the pixels per arc second increases the resolution and not the magnification.
The difference being that the angular dimensions of an object at the focal plane remain the same as captured through your telescope regardless of sensor/pixel size, you're just sampling it differently with different sized pixels. If you could measure the imprint on the sensor of the object your imaging, it would be the same regardless of sensor.
Magnification alters the apparent dimensions of the object at the focal plane. If I change the 10mm eyepiece for a 5mm, I double the magnification and apparent size of the object, and also make it less bright. You can measure this by projecting the image onto a piece of paper (as many do for solar viewing).
Subtle, but not the same
