Hmmm, you were robbed. I think it is a terrific shot, even more so for the challenge. Maybe too much contrast. i don't know. Would have been an 8 in my book.
I wish you could have gotten a couple meters/feet higher for this one. It looks like the photo would have had an interesting flow if it wasnt cut off by that gray roof at the bottom.
Cool pic. Too much sky for me here though. I'd have lobbed a lot of it off and ran with a nice letterbox-shaped photo. Give me a nice linear feel with the buildings and roller coaster, rather than a square shot of a lot of sky...