It's not easy to answer. I think when people describe image "pop" they're
seeing good edge contrast combined with perceived saturated colors.
Leica comes immediately to mind for me when talking about image 'pop' from experience with binos I've owned and tried.
Here's an old thread I started...
I think it has a lot to do with going from an old binocular to a modern top tier level or "alpha" binocular.
The difference in contrast and resolution was significant enough to give you that moment of awe.
I had the FL 8x32 and the resolution is awesome in that binocular.
Then you went from FL...