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

Execution · Pure Mechanics
A combat metroidvania testing precise platforming execution against fixed enemy patterns.

Execution · Pure Mechanics
An auto-scrolling lane shooter testing quick repositioning against memorised waves.
Guacamelee! Super Turbo Championship Edition leans Execution (Pure Mechanics); Son Son leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Guacamelee! Super Turbo Championship Edition
Combo brawling and dimension-swap platforming demand tight inputs
Son Son
Lane-switching and shooting under auto-scroll pressure is everything
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Guacamelee! Super Turbo Championship Edition
Enemies and bosses are colour-coded fixed patterns
Son Son
Enemy waves arrive on fixed schedules
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Guacamelee! Super Turbo Championship Edition
Hand-built world with nothing random
Son Son
Occasional random bamboo bonuses, otherwise fully fixed
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Guacamelee! Super Turbo Championship Edition
Ability-gated routing and upgrade order reward planning
Son Son
Learning wave layouts and fruit triggers maximises survival
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.