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

Execution · Practiced Mastery
Steady aim against scripted alien swarms with an upgrade economy underneath.

Execution · Practiced Mastery
A stylish Shibuya action RPG where dead teens fight for a second chance at life.
Alien Breed: Impact leans Execution (Practiced Mastery); The World Ends with You 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: Impact
Kiting alien swarms top-down demands steady aim and movement
The World Ends with You
Frantic stylus combat juggling two characters at once
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Breed: Impact
Aliens swarm on scripts, never modelling you
The World Ends with You
Noise enemies use fixed attack patterns
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Alien Breed: Impact
Ambush triggers are scripted-but-unknown first time through
The World Ends with You
Pin drops random until rates are known
The World Ends with You leans a little harder on optimization, though the gap is small.
Alien Breed: Impact
Weapon upgrades and ammo economy reward planning
The World Ends with You
Pin evolution, threads, and difficulty tuning reward system mastery
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.