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

Optimization · Pure Optimization
A famously janky open-world horror mystery where FBI agent Francis York Morgan investigates a small-town murder.

Optimization · Pure Optimization
Lane-defense economy optimization against semi-randomised zombie waves.
Deadly Premonition leans Optimization (Pure Optimization); Plants vs. Zombies 2: It's About Time leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Deadly Premonition
Clunky combat is forgiving and rarely the obstacle
Plants vs. Zombies 2: It's About Time
Tapping plants quickly only matters in surge moments
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Deadly Premonition
Shadows and the Raincoat Killer follow fixed scripts
Plants vs. Zombies 2: It's About Time
Zombie waves are announced patterns, not minds
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Deadly Premonition
Town schedules and side content are unknown until discovered
Plants vs. Zombies 2: It's About Time
Wave compositions and plant-food drops add per-level randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Deadly Premonition
Time management, schedules, and routing dominate completion
Plants vs. Zombies 2: It's About Time
Lawn economy and plant placement are the solvable core
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.