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.

Execution · Pure Mechanics
A Build-engine shooter rewarding fast, precise gunplay and thorough level exploration to find secrets and supplies.

Execution · Practiced Mastery
A sword-and-gun action shooter rewarding combo timing mastery and careful upgrade investment against scripted demon hordes.
Ion Fury leans Execution (Pure Mechanics); Shadow Warrior (2013) leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Ion Fury
Build-engine movement and precise gun skill define the combat ceiling
Shadow Warrior (2013)
Sword combos and gunplay require precise timing and input chaining
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Ion Fury
All enemies are scripted with fixed attack and patrol routines
Shadow Warrior (2013)
All enemies are scripted demons with fixed attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Ion Fury
Level secrets and enemy ambushes are hidden on first run
Shadow Warrior (2013)
Upgrade drop randomness introduces mild run-to-run variance
Shadow Warrior (2013) leans a little harder on optimization, though the gap is small.
Ion Fury
Ammo conservation and alternate-fire choices reward systematic play
Shadow Warrior (2013)
Ki power and upgrade tree investment form a meaningful build layer
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.