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

Execution · Practiced Mastery
A licensed brawler testing combat timing and memorised boss patterns.
Batman: Arkham City leans Execution (Practiced Mastery); Dragon Ball: Revenge of King Piccolo leans Execution (Practiced Mastery).
Dragon Ball: Revenge of King Piccolo leans a little harder on execution, though the gap is small.
Batman: Arkham City
Combo chains and counters need timing.
Dragon Ball: Revenge of King Piccolo
Combo timing and platforming reflexes carry the levels
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.
Dragon Ball: Revenge of King Piccolo
Bosses run scripted patterns, never adapt
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.
Dragon Ball: Revenge of King Piccolo
Level content is fixed after one playthrough
Batman: Arkham City leans a little harder on optimization, though the gap is small.
Batman: Arkham City
Gadget combos and challenge maps learnable.
Dragon Ball: Revenge of King Piccolo
Learning boss movesets and stage routes is the rest
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.