AES: Advanced Entertainment System, the SNK Neo Geo as a home console, can play the actual arcade game carts, with 100% arcade perfect graphics, sound, etc. Infamous for being expensive at the time of its release. Still is expensive due to the system being a little on the rare side, due to its limited success.
The Neo Geo Home system could not play MVS carts.
to be fair, why will you want to play mvs carts when you had the AES version, generally this one has lots more things than the MVS, and an even more easy interface than the MVS, the only thing that you could miss is the blood or some censor in the games, but honestly, I don't care
Even though is very lazy from their part to not include those, hell, in kawaks you can play with both just changing an option xD
btw, maybe this is a general fighting term, but what mean footsies?