Comment by yjftsjthsd-h

The Wii emulator is emulating the whole system including the CPU; WINE describes itself as not an emulator specifically because it's not doing anything about the CPU (hence not working on ARM Linux without extra work).

(I'm not 100% sold on this; I think "CPU emulator" and "ABI emulator" are both reasonable descriptions, albeit of different things, but that's the distinction that the WINE folks are making.)