That is correct, but that is a special discount program you have to apply for, wait for judgement, and get approved for in advance. It's not the default.
It was a great step forward, but I don't understand why they made it so complicated with an approval process, when Google did the same thing afterwards and could just say "the first million dollars a year is 15%, after that it's 30%".
The total revenue difference for the different companies is probably negligible.
(or... outside of the App Store you can sign up for a PayPal account and accept payments at a 3% rate instantly)