head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
A forgiving brawler-platformer where hijacking the right monster is the only decision.

Execution · Practiced Mastery
A gentle platformer where copying enemy abilities and light timing carries progress.
Crash of the Titans leans Execution (Practiced Mastery); Kirby: Nightmare in Dream Land 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.
Crash of the Titans
Combo brawling and titan-jacking need light timing
Kirby: Nightmare in Dream Land
light platforming and timing precision
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crash of the Titans
Titans are scripted mounts, not minds
Kirby: Nightmare in Dream Land
scripted enemies, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crash of the Titans
Levels are linear and fixed
Kirby: Nightmare in Dream Land
minimal randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crash of the Titans
Choosing which titan to ride is shallow strategy
Kirby: Nightmare in Dream Land
ability combos 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.