If by fair you mean the same cost to produce on the same process node, then an Arm V class core should be the same as an AMD compact core, roughly. The Arm N c

If by fair you mean the same cost to produce on the same process node, then an Arm V class core should be the same as an AMD compact core, roughly. The Arm N cores are a lot smaller, closer to Intel's E cores. Full sized Intel P cores or AMD's non-C Ryzens are closer to an Apple M core.