Since the site that held it, cannot vote unbiased, I am posting it here. Thanx for voting guys. Here is the original image.
It really isn't the number of changes, but how well (and obvious) they are. I could top half of these, but some are really good. I couldn't decide on 3, 4, 5 or 7, but in the end I went for the 7th one. The most difficult when doing this is to make colors match in saturation. Like the cops on #10, they should have had some contrast added to them, they're too blurry in contrast to the car and the police car.
I think 7 is the best quality, but the Spoon one is my favorite. Voted for 7, the work is better than the others. Very good blending.