There's no reason to think this will be significantly faster than that. ARM evolved as a low power architecture, back when Intel just didn't have any low power

There's no reason to think this will be significantly faster than that. ARM evolved as a low power architecture, back when Intel just didn't have any low power CPUs. ARM is a lot faster these days, but only because architecture complexity, and thus power usage, has increased. There is no free lunch here. ARM isn't super efficient at all, it's just low power. This chip has applications, but probably not in compute-heavy data centers. Networking gear maybe? Give each port in a switch an ARM core?