Originally Posted by Runelixx

In SP you can go back and fix any mistakes or make something better... in MP you either don't make mistakes, or you learn to work around them... SP is goof for learning the game but eventually the player will want to nice to MP. A lot of the best replays are made in MP as well... For example, check out Obey's clan video... knowing them I know they didn't stage that but rather fought and would make it realistic (such as a rule if up get punched you have to get knocked back a little) and MP challenges your ability to work around a player... SP the creativity is definately a big part, but once you get the idea, you can spend however long to make it. In MP, you have to decide what kind of fight you are going to do (ie shovel, grapple, etc.) and have a few seconds to execute your move. You also have to be able to compensate for your opponent's movements where as in SP you can just make Uke do as you wish.

SP Is good for learning and for testing.
MP Is good for challenge and for getting ideas possibly.
BOTH would be perfect for the ultimate player and/or repay maker.