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.

Optimization · Pure Optimization
Open-city LEGO cop comedy stuffed with disguise-gated collectibles.

Optimization · Practiced Mastery
A gag-driven platformer testing little beyond collectible patience.
LEGO City Undercover leans Optimization (Pure Optimization); The Simpsons Game leans Optimization (Practiced Mastery).
The Simpsons Game leans a little harder on execution, though the gap is small.
LEGO City Undercover
Easygoing chases, brawls, and platforming
The Simpsons Game
Simple platforming and character-power timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO City Undercover
Scripted crooks
The Simpsons Game
Parody enemies are jokes on rails
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
LEGO City Undercover
Open city fixed once explored
The Simpsons Game
Levels are fixed gag sequences
LEGO City Undercover leans a little harder on optimization, though the gap is small.
LEGO City Undercover
Disguise-ability gating across a collectible-stuffed city
The Simpsons Game
Character-ability puzzles and collectibles are lightly solvable
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.