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 · Pure Mechanics
A cute endless runner starring a dog dodging traffic.

Execution · Practiced Mastery
A playable pop album blending rhythm, racing, and shooting into a forgiving stylish ride.
Puppy Cross leans Execution (Pure Mechanics); Sayonara Wild Hearts 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.
Puppy Cross
Simple lane-dodging reflex timing
Sayonara Wild Hearts
Moderate dodging and timing, deliberately forgiving
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Puppy Cross
No opponents present
Sayonara Wild Hearts
Scripted pop-album set pieces
Puppy Cross leans a little harder on variance, though the gap is small.
Puppy Cross
Obstacle spawn randomness varies runs
Sayonara Wild Hearts
Fixed levels with memorizable layouts
Sayonara Wild Hearts leans a little harder on optimization, though the gap is small.
Puppy Cross
Minimal systems, casual endless runner
Sayonara Wild Hearts
Gold-rank score chasing rewards route learning
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.