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 · Pure Optimization
A physics puzzle-platformer about swapping three heroes to improvise solutions.

Optimization · Practiced Mastery
A gentle physics puzzle-platformer starring a creature made of unraveling yarn.
Trine leans Optimization (Pure Optimization); 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.
Trine
Physics platforming and wizard-box stacking need dexterity
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.
Trine
No opponent; puzzles are fixed
Unravel
No opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Trine
Levels are static and fully visible
Unravel
Everything is visible and fixed
Trine leans a little harder on optimization, though the gap is small.
Trine
Choosing the right hero and contraption solves each obstacle
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.