head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.

Execution · Pure Mechanics
A run-and-gun boss rush about dodging scripted patterns with tight inputs.

Execution · Pure Mechanics
A pure time-attack arcade racer testing flawless car control on precision platform tracks.
Cuphead leans Execution (Pure Mechanics); Trackmania Turbo leans Execution (Pure Mechanics).
Trackmania Turbo leans a little harder on execution, though the gap is small.
Cuphead
Tight dodging and parry timing decide every boss.
Trackmania Turbo
Platform-racer precision; every millisecond of input matters
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Cuphead
Bosses cycle scripted phases; no adaptation to player.
Trackmania Turbo
Ghost-only competition; no adaptive opponent
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Cuphead
Minor attack-order shuffling between phases.
Trackmania Turbo
Deterministic tracks with no hidden randomness
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Cuphead
Loadouts and boss phase order are fully learnable.
Trackmania Turbo
Finding the fastest line and technique per track is fully solvable
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.