head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

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

Execution · Pure Mechanics
Island-themed collection of twelve motion-controlled sports showcasing the Wii MotionPlus accessory.
Sports Champions 2 leans Execution (Pure Mechanics); Wii Sports Resort leans Execution (Pure Mechanics).
Sports Champions 2 leans a little harder on execution, though the gap is small.
Sports Champions 2
Motion-controlled swings and punches reward physical precision
Wii Sports Resort
MotionPlus precision in swordplay, archery and bowling
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 Sports Resort
Local versus duels involve mild feinting
Wii Sports Resort leans a little harder on variance, though the gap is small.
Sports Champions 2
Events are deterministic given your motion
Wii Sports Resort
Slight physics and CPU pattern randomness
Wii Sports Resort leans a little harder on optimization, though the gap is small.
Sports Champions 2
Technique tips exist but systems stay shallow
Wii Sports Resort
Each event has small learnable technique optima
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.