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.

Execution · Practiced Mastery
Fan-built ground-up remake of Half-Life with a reimagined Xen.

Execution · Practiced Mastery
GBA platformer where Wario smashes through puzzle levels and races escape timers for treasure.
Black Mesa leans Execution (Practiced Mastery); Wario Land 4 leans Execution (Practiced Mastery).
Wario Land 4 leans a little harder on execution, though the gap is small.
Black Mesa
Classic FPS aim and platforming sequences
Wario Land 4
Frantic escape sequences demand tight platforming under timers
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Black Mesa
Marines and aliens follow set scripts
Wario Land 4
Fixed scripted levels with no adaptive opposition
Black Mesa leans a little harder on variance, though the gap is small.
Black Mesa
Minor enemy placement surprises first run
Wario Land 4
Layouts fixed; only first-run secret discovery
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Black Mesa
Route, resource, and encounter knowledge
Wario Land 4
Treasure routing and frog-switch timing reward planning
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.