SP players/replay makers sometimes are capable of making really good moves in MP. Why? Because the replay makers learn how to move aswell. Some people say "SP is easy. The opponent is just standing there, waiting for a smackdown.". That's wrong. It's hard making a replay not looking like a complete failure. MP and SP are not very simular but the SP guys are usually not bad at MP. So if someone afraids of meeting a SP guy in MP, then that's not totally wrong. But I have to say, Judo is pure luck. Try playing TK when you're a Judo guy. You might get your ass kicked. My personal fav modes are aikido and other sambo modes.