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 bullet-hell shooter testing precise dodging through fixed dense patterns.

Execution · Pure Mechanics
A movement-shooter demanding near-perfect execution chains to maximise style rank against scripted but relentless enemies.
Rolling Gunner leans Execution (Pure Mechanics); ULTRAKILL leans Execution (Pure Mechanics).
ULTRAKILL leans a little harder on execution, though the gap is small.
Rolling Gunner
Dodging dense bullet patterns is the entire skill ceiling
ULTRAKILL
Style-ranked combat demands flawless movement, parries, and weapon-swap chains
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Rolling Gunner
Solo arcade, enemies are scripted not adaptive
ULTRAKILL
All enemies are scripted; no adaptive human opponent exists
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Rolling Gunner
Patterns are fixed once learned, minimal randomness
ULTRAKILL
Enemy placement is fixed and fully readable after one pass
ULTRAKILL leans a little harder on optimization, though the gap is small.
Rolling Gunner
Scoring routes and the rolling-gun mechanic reward planning
ULTRAKILL
Weapon synergies and ranked-route planning form a deep solvable system
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.