Escalators down to the MTR
Wait..hang on a minute...
That's right - look at the obviously fake Vivienne Tam store at the back of the lower picture! Oh, hang on, my wife say's Vivienne Tam is a real store, so I guess it must be the other fake picture showing the IFC2 in the middle of Times Square.
As a nice convenient way of steering the scene towards its rather vertiginous finale, the film makers decided to graft the IFC2 tower onto the Times Square mall. I guess the IFC mall wasn't ready in time for filming (otherwise, why use Times Square?).