Orientation is because photos were taken months apart.
This is to get an idea of quality, with the APS-C camera having a much larger (26x area) sensor and better optics to work with.
My impression is... S21 Ultra "space zoom" is, at best, a good party trick. But if you zoom in, the quality is still nearly garbage. Not an objectively "great photo of the moon."
You realize that these photos are to be compared with other phones and not some apsc on tripod, thats a ridiculous premise for everybody understanding 101 of photography that not even Samsung during any release was claiming to beat.
It still shows you much more details than visible via eyes, so yeah its a party trick (what else would moon shot on phone be), but pretty darn great at that (I haven't seen so many people with :-O since iphone 1 release when showing this... then they quickly try their top iphones and xiaomis and end up consistently with a small white blob).
There is one aspect that this phone wins at easily - it can take that moonshot (TBH it can be a bit sharper than yours) while handheld, pretty consistently. Good luck trying that with your apsc with such a long shutter, it will consistently end up in just a blur. Software often beats raw hardware even these days.
