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

Optimization · Pure Optimization
A sci-fi mystery that splits across thirteen protagonists' stories, backed by light real-time strategy battles.

Optimization · Pure Optimization
The infamous Atari 2600 adventure that is trivial once its obscure rules are known.
13 Sentinels: Aegis Rim leans Optimization (Pure Optimization); E.T. the Extra-Terrestrial 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.
13 Sentinels: Aegis Rim
Real-time strategy battles have light unit-control inputs
E.T. the Extra-Terrestrial
Clumsy pit navigation, little dexterity
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
13 Sentinels: Aegis Rim
Kaiju wave patterns are scripted per stage
E.T. the Extra-Terrestrial
No adaptive opposition
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
13 Sentinels: Aegis Rim
Hidden story order and mystery connections obscure the full picture
E.T. the Extra-Terrestrial
Item locations vary per game
13 Sentinels: Aegis Rim leans a little harder on optimization, though the gap is small.
13 Sentinels: Aegis Rim
Optimising battle chip builds and unlocking all story segments is the mechanical layer
E.T. the Extra-Terrestrial
Knowing the obtuse zone rules solves it quickly
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.