Wii Sports uses the 'cheating' AI. The AI that isnt smart enough to beat you legit, so it goes beyond the bounds of your characters abilitys to win.
I dont know if you have, but i have gotten to play the 'ace' and I almost always win. But his guy moves about 8x faster than mine. That is not an example of adaptive AI. That is an example of Stupid AI, cheating to add diffictulty.
PSN ID: Kwaad
I fly this flag in victory!