I have played wii sports and Wii sports resort when the both came out, and, while the graphics have improved, the motion has not.
The Wii motion plus was designed to allow for clean movement, but being used now, since the remotes are so old, they can’t control near as well as they used to.
I played wii sports club tennis, and had to pause exactly 12 times in a 1 point game to place my Wii remote on the floor to recenter it. I love the game but the controls just don’t work.