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

Optimization · Systems & Chaos
A horror adventure testing careful flag-tracking to dodge scripted bad endings.

Optimization · Systems & Chaos
Puzzle adventure about coaxing a giant half-tame creature through ancient ruins.
Corpse Party: Blood Drive leans Optimization (Systems & Chaos); The Last Guardian leans Optimization (Systems & Chaos).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Corpse Party: Blood Drive
Light chase-evasion sequences barely tax the hands
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.
Corpse Party: Blood Drive
Ghosts follow scripted horror triggers
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.
Corpse Party: Blood Drive
Wrong-end triggers are hidden until discovered
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.
Corpse Party: Blood Drive
Mapping flag conditions for true endings is the game
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.