Considering the image at least as uploaded here is 960x660 and assuming the top panel is about 1/4 the height that means each picture is about 768x330 or 253,440 pixels which is way less than the claimed differences. But if you convert it into bytes at 160kb it would be approximately 1,338,163 per side and if you convert it into raw 1s and 0s that gives a much more believable 4,282,122 bits meaning there’s about 550,000 bits that are the same which I would think would be the real challenge of finding.
…and now I’m late for work
I would hesitate to buy another realink camera. I recently bought an eo2 pro so I could keep an eye on my dogs while I was working. The thought was to just have it open on my second screen but in a recent firmware update they disabled the http and https capabilities. Also no native Linux app so I could only use it on the app on my phone. I did find a github with all the firmware back ports but that behavior is pretty scummy imo