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.

Optimization · Practiced Mastery
A charming kid-friendly RPG with timing prompts and light costume strategy.

Optimization · Light / Casual
A surreal driving game of using light to guide giant creatures away.
Costume Quest leans Optimization (Practiced Mastery); Titan Chaser leans Optimization (Light / Casual).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Costume Quest
Timed button prompts are the only dexterity ask
Titan Chaser
Driving and using light - low twitch demands
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Costume Quest
Monster battles follow simple fixed scripts
Titan Chaser
Titans are scripted, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Costume Quest
Quest content is fixed once doors are knocked
Titan Chaser
Fixed scenarios, minimal randomness
Costume Quest leans a little harder on optimization, though the gap is small.
Costume Quest
Costume ability matchups and stamp choices are light strategy
Titan Chaser
Figuring out how to herd each titan is the task
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.