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 · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.

Optimization · Pure Optimization
A breezy dungeon-crawling loot game about builds and ever-better randomized gear.
Project Zomboid leans Optimization (Pure Optimization); Torchlight leans Optimization (Pure Optimization).
Project Zomboid leans a little harder on execution, though the gap is small.
Project Zomboid
Combat is deliberate; precision matters but is slow.
Torchlight
Click-to-kill combat with minimal mechanical demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Torchlight
Solo dungeon crawl, no adaptive opposition
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Loot spawns and zombie distributions randomized.
Torchlight
Randomized loot and dungeon layouts gate power
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Skill grinding, base setup, and routing define survival.
Torchlight
Build paths and gear stats are the real game
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.