head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Underwater dogfighting testing piloting and aim through scripted missions.

Execution · Practiced Mastery
A pulpy hack-and-slash where a dhampir agent carves through Nazis and monsters.
AquaNox leans Execution (Practiced Mastery); BloodRayne leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
AquaNox
Six-degree underwater dogfighting demands piloting and aim
BloodRayne
Acrobatic melee combos and gunplay carry fights
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
AquaNox
Mission enemies attack on fixed scripts
BloodRayne
Enemies follow fixed AI routines
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
AquaNox
Missions play out identically each attempt
BloodRayne
Little randomness beyond enemy placement
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
AquaNox
Ship loadout and weapon choice add modest planning
BloodRayne
Feeding economy and level routes are simple to learn
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.