head to head
Sports Champions 2 asks more than Wii Play, and the gap is execution.

Execution · Pure Mechanics
Testing how precisely you can swing a Move controller across six sports.

Execution · Pure Mechanics
Nine pointer-driven minigames bundled with a Wii Remote, from duck-hunt shooting to table tennis.
Sports Champions 2 leans Execution (Pure Mechanics); Wii Play leans Execution (Pure Mechanics).
Sports Champions 2 leans clearly harder on execution.
Sports Champions 2
Motion-controlled swings and punches reward physical precision
Wii Play
Pointer aim and timing carry shooting and ping-pong games
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Sports Champions 2
Local rivals can be baited in boxing or tennis, lightly
Wii Play
Two-player duels add slight mutual prediction
Wii Play leans a little harder on variance, though the gap is small.
Sports Champions 2
Events are deterministic given your motion
Wii Play
Find Mii crowds and target spawns randomise lightly
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sports Champions 2
Technique tips exist but systems stay shallow
Wii Play
Minigames are too shallow to deeply optimise
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.