head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Pure Mechanics
Flipper timing against bouncy physics across three fixed tables.

Execution · Pure Mechanics
Motion-controlled WarioWare where you snap the remote into poses to clear five-second microgames.
Kirby's Pinball Land leans Execution (Pure Mechanics); WarioWare: Smooth Moves 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.
Kirby's Pinball Land
Flipper timing and aim control everything the ball does
WarioWare: Smooth Moves
Instant motion-pose changes and gesture accuracy under pressure
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Pinball Land
Tables and bosses are scripted machines
WarioWare: Smooth Moves
No adaptive opposition, just scripted prompts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Pinball Land
Bounce physics keep outcomes partly unpredictable
WarioWare: Smooth Moves
Random microgame draws keep each run unpredictable
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Kirby's Pinball Land
Learning table layouts and bonus triggers raises scores
WarioWare: Smooth Moves
Learning every form and microgame solution converges
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.