"app title in OS" is the Product Name from Xcode. When uploading to App Store you can enter anything you want. Now, like he was asking is it ok to have the Store name be longer to meet the unique requirements but the product name be short enough to make it fit well under App Icon on home screen. I doubt a customer will have 2 apps caller "Super" with similar icons on their device to be confused.
Real question is will they reject if they do not match precisely? The regs sound like they should not be Oranges in the store and Apples on the device, but if we have Mandarin Oranges in the store and just Oranges on the device will that pass.