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.

Optimization · Practiced Mastery
A trap-heavy sequel where level knowledge beats reflexes.
Black Mesa leans Execution (Practiced Mastery); Tomb Raider II leans Optimization (Practiced Mastery).
Black Mesa leans a little harder on execution, though the gap is small.
Black Mesa
Classic FPS aim and platforming sequences
Tomb Raider II
Precise platforming plus more frequent gunplay
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
Tomb Raider II
Human enemies still run fixed scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Black Mesa
Minor enemy placement surprises first run
Tomb Raider II
Unknown traps and ambushes punish first runs
Tomb Raider II leans a little harder on optimization, though the gap is small.
Black Mesa
Route, resource, and encounter knowledge
Tomb Raider II
Route, key-item, and secret solving dominate
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.