^ Yeah if the entire crown were to be made of concrete, sure, I'd agree that it looks different than the renderings. But unless this building is quite different than the last dozen skyscrapers built in this city, its crown will be hollow steel structure, anchored into the top concrete floor, and enclosed with several "stories" of glass. Those glass panels will conceal the BMU (which is being installed right now, you can see its steel core in
the video, thanks for the link btw) and the HVAC. So they've got several more apparent stories above the topped-out concrete to finish up the setbacks. It might not be
exact to the rendering, but few buildings are.