head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Optimization · Practiced Mastery
A rare PS2 survival horror about a girl trapped in a cruel storybook world ruled by sinister children.

Optimization · Systems & Chaos
Puzzle adventure about coaxing a giant half-tame creature through ancient ruins.
Rule of Rose leans Optimization (Practiced Mastery); The Last Guardian leans Optimization (Systems & Chaos).
Rule of Rose leans a little harder on execution, though the gap is small.
Rule of Rose
Clunky combat poses a modest physical bar
The Last Guardian
Slow climbing and platforming, very forgiving
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rule of Rose
Enemies are scripted, never adaptive
The Last Guardian
Trico is willful but not modeling you adversarially
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Rule of Rose
Obscure item hunts and cryptic events until mapped
The Last Guardian
Trico's unpredictable compliance adds noise
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Rule of Rose
Routes and puzzle solutions converge fully on replay
The Last Guardian
Environmental puzzles with 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.