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

Execution · Practiced Mastery
A licensed retro football simulation game.

Execution · Pure Mechanics
Motion-controlled tennis, bowling, golf, baseball and boxing built around simple swing gestures.
Adidas Championship Football leans Execution (Practiced Mastery); Wii Sports leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Adidas Championship Football
passing and shooting control precision
Wii Sports
Motion swing timing and accuracy decide every event
Adidas Championship Football leans a little harder on reads, though the gap is small.
Adidas Championship Football
human opponent prediction in multiplayer matches
Wii Sports
Casual local opponents add light mind games
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Adidas Championship Football
minor ball bounce randomness
Wii Sports
Minor physics wobble and CPU behaviour randomness
Adidas Championship Football leans a little harder on optimization, though the gap is small.
Adidas Championship Football
team tactics and formation setup
Wii Sports
Simple technique tricks like bowling spin are learnable
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.