head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Execution · Practiced Mastery
Licensed bike riding and building that asks little beyond basic handling.

Execution · Practiced Mastery
A playable pop album blending rhythm, racing, and shooting into a forgiving stylish ride.
American Chopper leans Execution (Practiced Mastery); 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.
American Chopper
Bike handling on missions is the only real demand
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.
American Chopper
AI riders follow fixed lines
Sayonara Wild Hearts
Scripted pop-album set pieces
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
American Chopper
Courses and missions are scripted
Sayonara Wild Hearts
Fixed levels with memorizable layouts
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
American Chopper
Chopper part choices matter, but shallowly
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.