It's not 100% that you will be approved, just that people way over 5/24 HAVE been approved (big difference IMO). I also think some bankers aren't actually doing the proper pre-approved check, it seems that people that don't initiate the request to check for offers are more likely to be approved - where as people that ask are less likely. Not sure how that works, but my suspicion is that sometimes it'll pop up with a pre-approval offer when they are looking at your account and those are getting around 5/24.
On the Chase Branded cards? I hadn't seen any of those without CPC online, but possible I just missed them.