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 · Practiced Mastery
Squad shooting that tests positioning orders and routing through scripted missions.

Optimization · Practiced Mastery
Threading precise inputs through scripted guard gauntlets aboard a controlled and memorisable facility.
Conflict: Global Terror leans Execution (Practiced Mastery); Metal Gear Solid 2: Sons of Liberty 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.
Conflict: Global Terror
Third-person gunplay across four squad members needs steady aim
Metal Gear Solid 2: Sons of Liberty
First-person aim and guard reaction windows demand precise input
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Conflict: Global Terror
Terrorist AI is scripted, never adapts
Metal Gear Solid 2: Sons of Liberty
Guards radio for backup on scripted triggers, not adaptive tactics
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Conflict: Global Terror
Enemy placements surprise only on first playthrough
Metal Gear Solid 2: Sons of Liberty
Alert timers and item pickups create some hidden-state tension
Metal Gear Solid 2: Sons of Liberty leans a little harder on optimization, though the gap is small.
Conflict: Global Terror
Squad orders, positioning and mission routing reward planning
Metal Gear Solid 2: Sons of Liberty
Chokepoint memorisation and radar manipulation are learnable and repeatable
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.