Stickup Cam Plug vs Indoor motion detection

I have a Stickup Cam plug-in (and several battery with Solar) and compared to Stickup cam Indoor. The motion detection is terrible… My indoor cams looking through windows (ir disabled) detect 10x+ further and much more accurate (even at the lowest sensitivity)

Did I waste money on the bigger cameras and solar panels?

Anything to do to improve the performance of stickup cams? Because they SUCK!