Every now and then an asshole gets what he deserves.
That's really all I need to say about this very short story. At first it looks like a love story, then you get this sick feeling in your gut, then you smile.
Not much of a stroker, in fact it may make some wither depending on your attitude. Technical quality is way up there and sure, it's short but it carries the plot message across like a bullet to the heart, thus the high plot rating.
And, yeah, I like seeing the assholes get their's now and then, thus the appeal to the reader score.