They only used one move the whole time; they never tried to get the items; If I put a 4 CPU match made out of 4 kirbys and all of them were level 9, they would just keep using that side attack all the time, jumping on top of each other, almost never dying, unless one of them falls off, which gives me another conclusion: If kirby is falling, why doesn't he (or she, never knew the difference) try to fly back on stage?
If I were to give you an example, I'd say that the game has little elves in it, that control the CPUs, and to control them, they use controllers with 4 buttons:
Left, right, left B and Right B
Sorry if I sound rude, I'm not doing it on purpose, but the game still has too many problems.