Sorry, this image should not have won any prize. The hands are terrible, there are odd things around the back person's nose, and the highlights in the eyes are wrong, there is a reddish blob on the front person's head, and these are especially obvious when you look at it blown up a little. Whoever judged this contest is pretty clueless about the current quality of AI art generation and was easily fooled. I make digital art, not photography, but these jumped out at me.

The subject matter is probably what "won" the contest, it's pretty well composed.