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.

Execution · Practiced Mastery
Patient ballistic aiming wrapped in plannable stealth positioning.

Execution · Practiced Mastery
Ballistics compensation along tightly scripted sniping corridors.
Sniper Elite V2 leans Execution (Practiced Mastery); Sniper: Ghost Warrior 2 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.
Sniper Elite V2
Ballistics-compensated long shots demand steady precise aim
Sniper: Ghost Warrior 2
Breath control, wind and drop compensation on every shot
Sniper Elite V2 leans a little harder on reads, though the gap is small.
Sniper Elite V2
Enemy AI runs fixed alert routines
Sniper: Ghost Warrior 2
Enemies run scripted patrols and alarms
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sniper Elite V2
Wind and patrol details vary slightly per attempt
Sniper: Ghost Warrior 2
Wind values randomise individual shot solutions
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Sniper Elite V2
Positioning, sound masking and route planning are learnable
Sniper: Ghost Warrior 2
Memorising target sequences and stealth routes carries missions
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.