Building comparison
head to head
Portal 2vsThief Simulator 2
Neither is simply harder - they are hard in different places. Portal 2 demands more optimization; Thief Simulator 2 demands more variance.
Portal 2
Optimization · Pure Optimization
A first-person puzzle game where seeing the solution is the whole skill.
Thief Simulator 2
Optimization · Pure Optimization
A stealth sim about casing houses and planning optimal heists.
Portal 2 leans Optimization (Pure Optimization); Thief Simulator 2 leans Optimization (Pure Optimization).
Portal 2Thief Simulator 2
Axis by axis
Execution3 vs 3
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Portal 2
Portal placement requires some precision but timing is lenient.
Thief Simulator 2
Lockpicking and stealth timing matter but stay light
Reads0 vs 2
Thief Simulator 2 leans clearly harder on reads.
Portal 2
No opponent; puzzles are static.
Thief Simulator 2
NPC patrols follow scripted routes, not adaptive
Variance0 vs 3
Thief Simulator 2 leans clearly harder on variance.
Portal 2
Puzzles are deterministic with no randomness.
Thief Simulator 2
Loot contents and patrol timing add mild uncertainty
Optimization9 vs 7
Portal 2 leans clearly harder on optimization.
Portal 2
Solving the puzzle's logic IS the entire game.
Thief Simulator 2
Planning routes, tools and casing targets is the 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.