Maybe the dealership ad looks messy because the person cutting it is working with way more limits than we realize. A local shop might have one guy doing the edit, the media buy, and the upload all in the same afternoon, so a half second of wrong text slipping through is almost expected. Big brands have teams of people checking every frame three times before it airs, plus agencies that get paid just to catch stuff like that. Also the local ad probably got resized and reformatted for like six different platforms, so something could have broke in that step instead of the edit itself. Calling it lazy or careless feels harsh when the budget gap is doing most of the damage here.

Two whole stops of light difference is not a small thing. Your phone is stacking a bunch of short exposures and running noise reduction that smears the fine stuff together, while the DSLR is pulling in way more actual signal per frame. That is why the bright core of the nebula looks fine on both but the faint outer wisps and the tiny stars around it fall apart on the phone. Zoom in to 100 percent and flip between the two shots, the DSLR files will hold up way better when you crop or print. If they really look the same at full size, your buddy either shot at high ISO with a kit lens wide open or the seeing was garbage that night.