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

Execution · Practiced Mastery
An open-city sequel deepening freeflow combat and predator gadget play.

Execution · Practiced Mastery
Era-typical action platforming over memorised boss patterns and level routes.
Batman: Arkham City leans Execution (Practiced Mastery); Spider-Man 2: Enter Electro leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Batman: Arkham City
Combo chains and counters need timing.
Spider-Man 2: Enter Electro
Web-swinging and combat timing carry moderate demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Batman: Arkham City
Enemies scripted, not adaptive.
Spider-Man 2: Enter Electro
Bosses like Electro cycle scripted phases
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Batman: Arkham City
Fixed encounters and challenges.
Spider-Man 2: Enter Electro
Level layouts and encounters are fixed
Batman: Arkham City leans a little harder on optimization, though the gap is small.
Batman: Arkham City
Gadget combos and challenge maps learnable.
Spider-Man 2: Enter Electro
Learning boss patterns and level routes is the depth
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.