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 · Pure Mechanics
A simple arcade rail shooter testing aim and reaction against scripted waves.

Execution · Pure Mechanics
Faster, harder Wolfenstein blending pulp story with brutal shootouts.
Sky Destroyer leans Execution (Pure Mechanics); Wolfenstein II: The New Colossus leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Sky Destroyer
Aiming and dodging on rails is the entire test
Wolfenstein II: The New Colossus
Aggressive dual-wield combat punishes sloppy aim.
Wolfenstein II: The New Colossus leans a little harder on reads, though the gap is small.
Sky Destroyer
Enemy planes fly scripted attack runs
Wolfenstein II: The New Colossus
Enemies scripted in arena waves.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Sky Destroyer
Stages repeat predictably once seen
Wolfenstein II: The New Colossus
Minimal randomness.
Wolfenstein II: The New Colossus leans a little harder on optimization, though the gap is small.
Sky Destroyer
Little to plan beyond learning spawn patterns
Wolfenstein II: The New Colossus
Weapon upgrades and contraptions modest.
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.