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 vibrant 2D platformer with rhythm-based highlight levels.

Execution · Pure Mechanics
A synesthetic on-rails shooter where lock-on fire becomes part of the trance soundtrack.
Rayman Legends leans Execution (Pure Mechanics); Rez 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.
Rayman Legends
Tight 2D platforming and music levels
Rez
Lock-on targeting in time with the beat tests aim and rhythm
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rayman Legends
No adaptive opponent
Rez
Enemy waves are entirely scripted
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Rayman Legends
Fixed levels
Rez
Fixed rail paths; nothing is hidden after one run
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Rayman Legends
Time trial routing
Rez
Score chains and route choices reward memorized play
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.