I feel like without the usual bad hands tell, it's pretty impossible to tell. There's a few other "tells" but your image selection is particularly avoident. Having generated plenty of images, cherry picking the best is par for the course.
Although, a bad ai sample is pretty easy to tell at least. Even up against a bad human artist, a person with 8 fingers is easy ai giveaway. And for every one good image we get from SD at least, I toss out a few dozen.