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
A vertical-scrolling bullet-hell shooter with intense pattern-based combat.

Execution · Practiced Mastery
Fan-built ground-up remake of Half-Life with a reimagined Xen.
Azure Reflections leans Execution (Practiced Mastery); Black Mesa leans Execution (Practiced Mastery).
Azure Reflections leans a little harder on execution, though the gap is small.
Azure Reflections
bullet-hell dodging and precise shooting
Black Mesa
Classic FPS aim and platforming sequences
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Azure Reflections
fixed enemy patterns, scripted bosses
Black Mesa
Marines and aliens follow set scripts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Azure Reflections
minor randomness in enemy spawns
Black Mesa
Minor enemy placement surprises first run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Azure Reflections
scoring and route optimization per stage
Black Mesa
Route, resource, and encounter knowledge
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.