Can’t see a difference

My Garmin VIRB360 camera has two modes when shooting 360 degree video. In the first, it records 4K video and stitches the front and back lens videos in the camera, so it uploads into VIRB Edit nice and fast. In the second mode, it records the front and back lens videos separately, and VIRB Edit stitches as it uploads the pictures. This results in a supposed 5K video, but the stitching process takes literally hours at a time. I’ve done a few tests and honestly I don’t see the point – the 5K doesn’t look much better.

Here are some screen shots from two days shooting, one at 5K and one at 4K. Can you tell me which is which?

Picture 1
Picture 2