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
A top-down shooter testing aim and resource management against alien swarms.

Execution · Practiced Mastery
An arcade FPS that scores you for killing enemies in the most creative ways possible.
Alien Breed Evolution leans Execution (Practiced Mastery); Bulletstorm 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.
Alien Breed Evolution
Twin-stick aiming under alien swarms demands reflexes
Bulletstorm
Leash, kick, and shot timing drive skillshot chains
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Breed Evolution
Aliens charge on scripts, nothing adapting to you
Bulletstorm
Enemies are scripted fodder for your combos
Alien Breed Evolution leans a little harder on variance, though the gap is small.
Alien Breed Evolution
Spawn timing and ambushes add unpredictability
Bulletstorm
Arenas and spawns are fixed and learnable
Bulletstorm leans a little harder on optimization, though the gap is small.
Alien Breed Evolution
Ammo and upgrade management reward resource planning
Bulletstorm
Maximising skillshot score per arena is a solvable puzzle
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.