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
Refined Crash sequel with tighter movement and hidden gem-path routing.

Execution · Pure Mechanics
Retro Studios' notoriously tough revival of Donkey Kong Country with relentless set-piece levels.
Crash Bandicoot 2: Cortex Strikes Back leans Execution (Pure Mechanics); Donkey Kong Country Returns 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.
Crash Bandicoot 2: Cortex Strikes Back
Slide-jump precision across varied hazards
Donkey Kong Country Returns
Demanding rocket-barrel and mine-cart sections, strict timing
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Bandicoot 2: Cortex Strikes Back
Scripted enemies and bosses
Donkey Kong Country Returns
Scripted hazards, no adaptation
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Bandicoot 2: Cortex Strikes Back
Fixed levels with hidden but static secrets
Donkey Kong Country Returns
Hidden puzzle pieces, fixed once found
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Crash Bandicoot 2: Cortex Strikes Back
Gem paths and box routes converge
Donkey Kong Country Returns
KONG letters and time attack routes are learnable
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.