It seems that "native vs. emulated" here means "arm64 binaries vs. x86 binaries, both running on Windows". So the comparison that the OP is making wouldn't be p

It seems that "native vs. emulated" here means "arm64 binaries vs. x86 binaries, both running on Windows". So the comparison that the OP is making wouldn't be possible if Blizzard didn't already support aarch64.