I came thru TBIT immigration 2 weeks ago with Global Entry. There was no line and took about 5 seconds for the kiosk to take my photo and I was thru. From getting off my JL flight to curb side was about 7 minutes, including a stop at the restroom at the far end of TBIT immigration because I knew that one is always empty. Took a lot longer to get out of the horseshoe traffic... can't wait for the APM to start running.
Global Entry is a good example of when the US Govt works, it really works.