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

Optimization · Practiced Mastery
Routing an ever-growing ball through fixed object layouts against the clock.

Optimization · Practiced Mastery
A physics puzzle testing release timing and planned ricochet solutions.
Katamari Damacy Reroll leans Optimization (Practiced Mastery); King Oddball leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Katamari Damacy Reroll
Tank-control rolling under time pressure takes coordination
King Oddball
Release timing on the swinging tongue is the core input
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Katamari Damacy Reroll
No opponents, just cluttered scripted playgrounds
King Oddball
Static targets never adapt
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Katamari Damacy Reroll
Object layouts are fixed every attempt
King Oddball
Physics ricochets add slight unpredictability
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Katamari Damacy Reroll
Growth-route planning through object size tiers drives scores
King Oddball
Each level has discoverable multi-kill boulder solutions
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.