head to head
Neither is simply harder - they are hard in different places. Grand Theft Auto V demands more reads; Wolfenstein demands more execution.

Execution · Practiced Mastery
Sandbox crime playground spanning shooting, driving, and a persistent online economy.

Execution · Practiced Mastery
A single-player shooter where aggressive aim and movement against scripted enemies is the core loop.
Grand Theft Auto V leans Execution (Practiced Mastery); Wolfenstein leans Execution (Practiced Mastery).
Wolfenstein leans clearly harder on execution.
Grand Theft Auto V
Driving and shooting demand decent inputs.
Wolfenstein
aim and movement carry combat
Grand Theft Auto V leans clearly harder on reads.
Grand Theft Auto V
Online PvP exists but mostly gear/positioning, not modeling.
Wolfenstein
fixed enemy patterns, no adaptation
Grand Theft Auto V leans a little harder on variance, though the gap is small.
Grand Theft Auto V
Some mission and lobby randomness.
Wolfenstein
minor spawn randomness
Wolfenstein leans a little harder on optimization, though the gap is small.
Grand Theft Auto V
Heists, money loops, builds learnable.
Wolfenstein
upgrade paths and routes 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.