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.

Execution · Practiced Mastery
Sandbox FPS where a nanosuit lets you choose speed, strength, or stealth per fight.

Execution · Practiced Mastery
A sci-fi shooter where aim and weapon-switching against scripted alien enemies is the core test.
Crysis leans Execution (Practiced Mastery); Halo: Combat Evolved Anniversary leans Execution (Practiced Mastery).
Halo: Combat Evolved Anniversary leans a little harder on execution, though the gap is small.
Crysis
gunplay and suit-mode switching mid-fight
Halo: Combat Evolved Anniversary
aim and grenade timing carry combat
Halo: Combat Evolved Anniversary leans a little harder on reads, though the gap is small.
Crysis
AI soldiers are scripted searchers
Halo: Combat Evolved Anniversary
covenant AI is scripted, not adaptive
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crysis
open encounters play out unpredictably at first
Halo: Combat Evolved Anniversary
enemy spawns and drops vary
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crysis
suit energy management and approach planning
Halo: Combat Evolved Anniversary
weapon sandbox and routes are solvable
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.