People still can't seem to grasp the concept that netcode can't fix terrible connections.
Netcode is only half the battle, you must also account for the connection as well. Some folks you will never have a good match due to their location or their means. As long as KOF's baseline is improved all will be fine.
100% this
Only pay attention to people comparing the netcode to other fighting games they play, while playing lobby matches with friends not ranked with randoms. If it's the same connection, against the same people, then it's most probably on the game's netcode if they're having problems they don't usually have in other games.