head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.

Execution · Practiced Mastery
Columbia's sky-rail shooter wrapped in dimensional intrigue.

Execution · Practiced Mastery
Tests cautious route planning and scavenged-resource management through hostile zones.
BioShock Infinite leans Execution (Practiced Mastery); Left Alive 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.
BioShock Infinite
Skyline traversal and aiming reward inputs.
Left Alive
Clunky shooting and stealth still demand careful manual play
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
BioShock Infinite
Enemies scripted in arena waves.
Left Alive
Enemy patrols run fixed detection scripts
Left Alive leans a little harder on variance, though the gap is small.
BioShock Infinite
Loot drops mildly randomized.
Left Alive
Patrol layouts are unknown on first approach
Left Alive leans a little harder on optimization, though the gap is small.
BioShock Infinite
Gear, vigors, weapon picks straightforward.
Left Alive
Crafting, routing and survivor choices reward planning over reflexes
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.