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
Atari's foundational arcade game of bouncing a ball to clear brick walls.

Execution · Pure Mechanics
A physics comedy about an octopus in a suit flailing through fatherhood without blowing his cover.
Breakout leans Execution (Pure Mechanics); Octodad: Dadliest Catch 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.
Breakout
Paddle precision is essentially the entire game
Octodad: Dadliest Catch
Deliberately clumsy limb controls are the whole challenge
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Breakout
No opponent
Octodad: Dadliest Catch
No opponents, just suspicion meters
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Breakout
Ball physics are deterministic
Octodad: Dadliest Catch
Physics wobble adds slapstick unpredictability
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Breakout
Tunneling strategy to the top row helps
Octodad: Dadliest Catch
Simple objectives, little system depth
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.