head to head
Sniper Elite: Nazi Zombie Army asks more than Manhunt, and the gap is execution.

Optimization · Practiced Mastery
Grim stealth horror about luring scripted hunters into executions.

Execution · Practiced Mastery
Co-op horde defense balancing ballistic marksmanship with chokepoint planning.
Manhunt leans Optimization (Practiced Mastery); Sniper Elite: Nazi Zombie Army leans Execution (Practiced Mastery).
Sniper Elite: Nazi Zombie Army leans clearly harder on execution.
Manhunt
Stealth timing on executions
Sniper Elite: Nazi Zombie Army
Long-range ballistic shots and horde kiting demand steady aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Manhunt
Hunters patrol on scripts
Sniper Elite: Nazi Zombie Army
Zombie waves charge on scripted triggers
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Manhunt
Patrol noise reactions add small unpredictability
Sniper Elite: Nazi Zombie Army
Spawn composition varies slightly between runs
Manhunt leans a little harder on optimization, though the gap is small.
Manhunt
Shadow routes and lure tactics are learnable
Sniper Elite: Nazi Zombie Army
Chokepoint setups, trap placement and ammo economy carry co-op runs
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.