Explaining of over, under, and good

I liked my first post of this with the different images. I thought that the under exposed and the well exposed on where good. But since we couldn't have different images up there, I think the same images are fine. Whatev's to them. I don't love the one that I edited on because I really hadn't figured out how to use lightroom correctly at that point, so I kind of wish that I could re due that part. Alright done explaining that one