Upload & Sell: Off
That crop looks problematic, with odd zones of sharp and soft. Did you try - 1.5 or -2, as suggested? Could it be a JPG compression problem, i.e. the quality is too low?
Was it windy that day? Wind playing havoc with branches perhaps. Other than that I could imagine that it would be a Jpeg related issue for sure.
Even though some files are said "not to be altered" when uploading within restriction limits to some image hosts there is still a difference between viewing it through preview and/or in photoshop versus online viewing, the latter more often than not looking worse. Why it is so I have yet to figure out.
Edit: Carsten: the soft mush in the middle is hard to explain though.