Earlier quoted context omitted.
Yeah, based on just the data in this article, I would see A9 as preferable to A15 for using as the CPU of a mobile device.
Definitely, though wasn't the A15 designed for more of a compact server role? IIRC the A15 had different design goals.
Ok, I' would believe that. I don't know much about the correspondence between A8/A9/A15 and real-world devices.