I've tried a lots of stuff, especially the combination of levels, curves, color finesse, shadow/highlight etc. but still nothing. I also used Selective color to boost the blue channel because of the sky, but it's just meh... Here is an album - http://imgur.com/a/BEYYx - it contains my attempts. Any thoughts about what am I doing wrong or what should I do?
Was your target SS captured from the same source as your start SS?
Because the target SS has brighter values on the clouds than on the building roof, while your Original has the opposite. So maybe you're having trouble because the base plate is not the sameGpu or capture device differences?). So unless you do some very specific color changes something will allways be off. I tried here and with global changes, the sky/clouds don't ever get identical, while the rest of the colors do.