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.

Optimization · Practiced Mastery
A slapstick co-op moving simulator about hurling furniture into a truck against the clock.

Execution · Practiced Mastery
Plannable stealth routing punctuated by precise ballistic marksmanship.
Moving Out leans Optimization (Practiced Mastery); Sniper Elite III leans Execution (Practiced Mastery).
Sniper Elite III leans a little harder on execution, though the gap is small.
Moving Out
Physics carrying, throwing, and steering under time pressure
Sniper Elite III
Ballistic long shots demand steady, compensated aim
Sniper Elite III leans a little harder on reads, though the gap is small.
Moving Out
No adaptive opposition; pure co-op chaos
Sniper Elite III
Enemy AI follows mappable alert and search routines
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Moving Out
Ragdoll physics adds slapstick unpredictability
Sniper Elite III
Patrol details and wind vary slightly per attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Moving Out
Routing furniture and splitting tasks drives gold times
Sniper Elite III
Open maps reward planned routes, sound masking and relocation
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.