Mobile Passport at T5 (JetBlue) is the same line as Global Entry. MP at T4 (delta) can be a crap shoot. Haven’t flown AA in ages so not sure what the situation is with them or what terminal they come in. We had used MP for years and it was awesome at T5. But we got caught up in a mess at T4 and that’s when we decided to go with GLobal Entry. We have CLEAR as well (free with the AMEX). And not impressed. Doubt will renew that.
Used Global Entry a couple of weeks ago in Aruba. Now using facial recognition,,,,no fingerprints, no questions...just a picture which gives a printed receipt. Hand that to the agent and that's that. Only ones at the GE terminals and a decent line backed up at the regular line
We have used Mobile Passport a few times this year. Coming back from SXM to MIA in May there was a designated line right next to the GE line. We also used it in August coming back Madrid to Dallas both GE and Mobile Passport went to the same line. It’s easy to use and it’s FREE.