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
A puzzle-leaning platformer testing perspective-flip problem solving more than reflexes.

Optimization · Practiced Mastery
A gentle physics puzzle-platformer starring a creature made of unraveling yarn.
Super Paper Mario leans Optimization (Practiced Mastery); Unravel 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.
Super Paper Mario
Light platforming demands, well below mainline Mario
Unravel
Gentle platforming and yarn-swing timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Super Paper Mario
Enemies follow simple fixed patterns, no adaptation
Unravel
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Super Paper Mario
Dimension-flip secrets are scripted-but-unknown until found
Unravel
Everything is visible and fixed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Super Paper Mario
Solving levels via the 2D/3D flip mechanic is the core test
Unravel
Physics puzzles with discoverable intended 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.