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

Optimization · Practiced Mastery
Nemesis-system sequel that adds orc army management and fortress sieges.

Optimization · Practiced Mastery
Methodically mapping a hostile station where knowledge and routing beat reflexes.
Middle-earth: Shadow of War leans Optimization (Practiced Mastery); System Shock leans Optimization (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Middle-earth: Shadow of War
Same counter-heavy combat as its predecessor
System Shock
Combat and cyberspace ask competent but dated reflexes
Middle-earth: Shadow of War leans a little harder on reads, though the gap is small.
Middle-earth: Shadow of War
Nemesis system mimics adaptation but follows knowable rules
System Shock
SHODAN's threats are scripted, not an adapting mind
Middle-earth: Shadow of War leans a little harder on variance, though the gap is small.
Middle-earth: Shadow of War
Random orc traits, betrayals, and fortress compositions
System Shock
Citadel's layout and logs are hidden until uncovered
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Middle-earth: Shadow of War
Army building and siege planning layer on top
System Shock
Inventory, routing and station knowledge solve the 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.