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 · Twitch Chaos
Flipper execution and table knowledge with Pokémon-catching RNG on top.

Execution · Twitch Chaos
Rapid-fire reflex bursts against randomised waves in ten-second chunks.
Pokémon Pinball leans Execution (Twitch Chaos); Shutshimi leans Execution (Twitch Chaos).
Shutshimi leans a little harder on execution, though the gap is small.
Pokémon Pinball
Flipper timing and nudge control are the whole input
Shutshimi
Ten-second waves demand instant dodging and target triage
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Pokémon Pinball
A pinball table has no mind
Shutshimi
Enemies spawn from random tables, not a mind
Shutshimi leans a little harder on variance, though the gap is small.
Pokémon Pinball
Ball physics and catch-mode rolls add real randomness
Shutshimi
Randomised waves and absurd power-ups reshape every run
Pokémon Pinball leans a little harder on optimization, though the gap is small.
Pokémon Pinball
Mode routing and table knowledge raise scores predictably
Shutshimi
Upgrade choices under time pressure are a thin layer
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.