Look: Mexico (or DF, or whatever you want to call it) is a great world-class megacity. But if you're asking to have it judged as a "skyscraper" city, it does not belong in the same league with the great skylines of the world.
Individually, the real skyscrapers (all 12 of them) are fine-looking structures, but they are way too spread out to give the city a cohesive skyline. In short, because the towering buildings are so far apart, what little skyline the city has, lacks "character." 6/10.