This situation of scores according to the interpretation of the challenges is becoming more of my displeasure.
I have seen good pictures penalized by a very narrow interpretation of what people think the image of a particular challenge should be.
I'm not saying it's my case, but I take the opportunity to ask your feedback about the strange (controversial?) votes of this entry:
http://www.dpreview.com/challenges/Entry.aspx?ID=539220
I think in many cases, the result of an inverted bell curve (many low votes and also many high votes) is that the image is a strong one but doesn't fit exactly with the challenge theme. Some will vote high for the image, other will vote it low because they feel it compromised the challenge theme. This seems to apply to many of the examples and comments in this thread.