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
Big Daddy POV return to Rapture with tighter combat systems.

Execution · Practiced Mastery
Tests sustained crowd-kiting and spawner-priority decisions in co-op dungeon runs.
BioShock 2 leans Execution (Practiced Mastery); Gauntlet Legends leans Execution (Practiced Mastery).
Gauntlet Legends leans a little harder on execution, though the gap is small.
BioShock 2
Dual-wield drill and gun timing matter.
Gauntlet Legends
Kiting endless spawners while shooting is the moment-to-moment test
BioShock 2 leans a little harder on reads, though the gap is small.
BioShock 2
Splicer AI scripted, not adaptive.
Gauntlet Legends
Mobs pour from generators on fixed logic
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
BioShock 2
Sister-gathering waves add randomness.
Gauntlet Legends
Item and food spots are scripted-but-unknown initially
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
BioShock 2
Plasmid combos and gear loadouts solvable.
Gauntlet Legends
Generator-killing priority and character leveling 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.