I don't think many people vote 10, 9, 8, and on down. But, in an online contest like this, people tend to be much more critical... especially of their competition or their friends competition. At least in the last couple CMON contests the scores seem to be at least a point below where they should be (and sometimes even more). However, for the most part it seems to be done to all the entries, so the best pieces still tend to have the highest scores, even if they are much lower than they should be.
To play devil's advocate, I'd say that even though this piece is well painted, it doesn't have that wow factor to make it stand out in a competition. I'm also put off by the fact that it's mounted on a completely empty gaming base. That almost always hurts the score, competition or not. I'm guessing it was a commission piece and that's what the buyer asked for. By the way, this piece was originally from 2012, BangDoll posted a photo of the same figure to the gallery and it scored an 8.1 (7.8). I would say that score is on the low side too, but that is without any contest votes to bring it down.
http://www.coolminiornot.com/307482?browseid=12138844