Pedantic terminology alert.
"based on the Reduced Instruction Set Computing (RISC) architecture, the same architecture successfully employed by Arm"
I'm sure you don't mean this. Arm is an architecture (specifically things like Arm7 etc.) IBM POWER is an architecture. Intel x86 is an architecture.
RISC is a style of processor design, typically one that trades off a smaller number of different instructions against a faster execution speed. Of course, this definition is waaaaaay to simplistic now.
The only place that confusion arises is with the RISC-V processor type, where the architecture is RISC-V (but not just RISC).