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.

Optimization · Practiced Mastery
An isometric action RPG narrated as you play.

Execution · Practiced Mastery
A stylish Shibuya action RPG where dead teens fight for a second chance at life.
Bastion leans Optimization (Practiced Mastery); The World Ends with You leans Execution (Practiced Mastery).
The World Ends with You leans a little harder on execution, though the gap is small.
Bastion
Action combat needs timing and aim.
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.
Bastion
Enemies are scripted.
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.
Bastion
Minor loot variance.
The World Ends with You
Pin drops random until rates are known
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Bastion
Weapon and idol builds 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.