This is the first time I have seen this sort of reflective image executed with such technical excellence and then submitted to a challenge for which it is perfectly relevant. This particular style having been so tested, and found solidly mediocre by the jury of DPC voters, I suppose it's not worth trying on DPC again any time soon. Ah well, voters often completely overlook gems like this.
I am guessing that what threw at least some off is that this sort of picture, executed poorly, is the kind of photograph that everyone probably takes at one time or another. It's worth repeating what I said above: the execution here is near flawless, and I think that it would be easy to underestimate the difficulty of accomplishing what you have here.
I applaud you for your willingness to take the risk of presenting the voting public with something outside of the norm. I think this is as important as any other charge that a photographer might have.
looks like you did some desat on this and in so doing may have lost the detail of what the dark area is...I like the desat and I like this as an abstract, but if you had any green in the trees, it might have been better.